Custom Tubing adapter STL file ⌀ 121–78 mm (Length: 140 mm) 📦#7174

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Tube fitting ⌀121 mm to ⌀78 mm in STL format. Final length of this sleeve is 140 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The axes of the tubes are offset by 21.4 mm. The ends have a fillet on the outside to ease the connection.
Generation date: 2026-02-10
3D Model Tubing adapter STL file ⌀ 121–78 mm (Length: 140 mm)

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Free
  • inline-tube-adapter-lenA20mm-d_model7174-nb0_dd{id}.stl : 3.2 Mo
STL Mesh quality : Linear deflection 0.05 Angular deflection 0.05
No compliance warranty No compliance warranty
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Values for this model

This model was generated by the Inline tube adapter template, with the following values:
Parameter Value
#1 side A length 20 mm (≃0.79 in)
#2 side A outer diameter 121 mm (≃4 3/4 in)
#3 side A thickness 3 mm (≃1/8 in)
#4 side B length 20 mm (≃0.79 in)
#5 side B outer diameter 78 mm (≃3 1/16 in)
#6 side B thickness 3 mm (≃1/8 in)
#7 transition length 100 mm (≃3 15/16 in)
#8 axis offset 21.4 mm (≃0.84 in)
#9 ends fillet fillet on the outside
Metadata Value
inner diameter (side A) 115 mm (≃4.53 in)
inner diameter (side B) 72 mm (≃2.83 in)
total length 140 mm (≃5 1/2 in)
illustration of the parameters
Parameter overview

Labels are used in the naming of the downloaded 3D files.

Parameter Label
#1 side A length lenA
#2 side A outer diameter diA
#3 side A thickness thA
#4 side B length lenB
#5 side B outer diameter diB
#6 side B thickness thB
#7 transition length tra
#8 axis offset ofs
#9 ends fillet fil

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To search for a model based on your own parameters, go to the template page Inline tube adapter 

Tube adapter STL 3D file ⌀ 85–29 mm (Length: 140 mm) (📦 #1119)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 85–29 mm (Length: 140 mm)
Tube coupler ⌀85 mm to ⌀29 mm in STL format. Total length of this reducer is 140 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The axes of the tubes are off-center by 27 mm. The ends are not rounded.
Parameter Value Unit
side A length 20 mm
side A outer diameter 85 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 29 mm
side B thickness 2 mm
transition length 100 mm
axis offset 27 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 80–55 mm (Length: 140 mm) (📦 #2592)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 80–55 mm (Length: 140 mm)
Tube coupler ⌀80 mm to ⌀55 mm in STL format. Length of this coupler is 140 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The two axes of the tubes are offset by 12.4 mm. The ends have a fillet on the inside to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 80 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 55 mm
side B thickness 2 mm
transition length 80 mm
axis offset 12.4 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 60–30 mm (Length: 140 mm) (📦 #1100)

1 object(s) - format STL (4.7/5) 6 vote(s)
Tube adapter STL file ⌀ 60–30 mm (Length: 140 mm)
Straight sleeve ⌀60 mm to ⌀30 mm in STL 3D format. Final length of this adapter is 140 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 20 mm as well. The two axes of the tubes are off-center by 13.9 mm. The ends have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 60 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 30 mm
side B thickness 3 mm
transition length 100 mm
axis offset 13.9 mm
ends fillet no fillet

Tube adapter STL file ⌀ 153–83 mm (Length: 170 mm) (📦 #9047)

1 object(s) - format STL
Tube adapter STL file ⌀ 153–83 mm (Length: 170 mm)
Tube coupler ⌀153 mm to ⌀83 mm in STL format. Final length of this connector is 170 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 50 mm. The axes of the tubes are off-center by 29 mm. The ends are not rounded.
Parameter Value Unit
side A length 40 mm
side A outer diameter 153 mm
side A thickness 4 mm
side B length 50 mm
side B outer diameter 83 mm
side B thickness 4 mm
transition length 80 mm
axis offset 29 mm
ends fillet no fillet

Tube adapter STL file ⌀ 85–29 mm (Length: 180 mm) (📦 #1120)

1 object(s) - format STL (5.0/5) 1 vote(s)
Tube adapter STL file ⌀ 85–29 mm (Length: 180 mm)
Inline tube junction ⌀85 mm to ⌀29 mm in STL format. Length of this sleeve is 180 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The axes of the tubes are off-center by 27 mm. The ends have no fillet.
Parameter Value Unit
side A length 40 mm
side A outer diameter 85 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 29 mm
side B thickness 2 mm
transition length 100 mm
axis offset 27 mm
ends fillet no fillet

Tube adapter STL file ⌀ 60–15 mm (Length: 165 mm) (📦 #2400)

1 object(s) - format STL
Tube adapter STL file ⌀ 60–15 mm (Length: 165 mm)
Inline tube reducer ⌀60 mm to ⌀15 mm in STL 3D format. Final length of this junction is 165 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 40 mm. The axes of the tubes are offset by 20 mm. The ends are rounded on the outside.
Parameter Value Unit
side A length 25 mm
side A outer diameter 60 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 15 mm
side B thickness 2 mm
transition length 100 mm
axis offset 20 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 150–99 mm (Length: 205 mm) (📦 #5672)

1 object(s) - format STL
Tubing adapter STL file ⌀ 150–99 mm (Length: 205 mm)
Tubing reducer ⌀150 mm to ⌀99 mm in STL format. Total length of this reducer is 205 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 70 mm, the smaller one of 40 mm. The axes of the tubes are off-center by 25 mm. The ends feature an internal fillet.
Parameter Value Unit
side A length 70 mm
side A outer diameter 150 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 99 mm
side B thickness 3 mm
transition length 95 mm
axis offset 25 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 147–75 mm (Length: 180 mm) (📦 #1237)

1 object(s) - format STL
Tube adapter STL file ⌀ 147–75 mm (Length: 180 mm)
Tube junction ⌀147 mm to ⌀75 mm in STL format. Final length of this junction is 180 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 40 mm. The axes of the tubes are offset by 35.9 mm. The ends have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 147 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 75 mm
side B thickness 2 mm
transition length 120 mm
axis offset 35.9 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 75–50 mm (Length: 100 mm) (📦 #1238)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 75–50 mm (Length: 100 mm)
Tube fitting ⌀75 mm to ⌀50 mm in STL format. Total length of this sleeve is 100 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The axes of the tubes are off-center by 12.4 mm. The ends have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 75 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 50 mm
side B thickness 2 mm
transition length 60 mm
axis offset 12.4 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 111–79 mm (Length: 85 mm) (📦 #8022)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 111–79 mm (Length: 85 mm)
Straight sleeve ⌀111 mm to ⌀79 mm in STL 3D format. Length of this fitting is 85 mm. The larger-diameter tube has a thickness of 3 mm and a length of 25 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 20 mm. The two axes of the tubes are off-center by 14.9 mm. The ends feature an external fillet to make tube connection easier.
Parameter Value Unit
side A length 25 mm
side A outer diameter 111 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 79 mm
side B thickness 2 mm
transition length 40 mm
axis offset 14.9 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 152–52 mm (Length: 180 mm) (📦 #1788)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 152–52 mm (Length: 180 mm)
Tube reducer ⌀152 mm to ⌀52 mm in STL format. Length of this connector is 180 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 40 mm. The two axes of the tubes are offset by 35.9 mm. The ends are not rounded.
Parameter Value Unit
side A length 20 mm
side A outer diameter 152 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 52 mm
side B thickness 2 mm
transition length 120 mm
axis offset 35.9 mm
ends fillet no fillet

Tube adapter STL file ⌀ 116–79 mm (Length: 85 mm) (📦 #8017)

1 object(s) - format STL
Tube adapter STL file ⌀ 116–79 mm (Length: 85 mm)
Tube adapter ⌀116 mm to ⌀79 mm in STL 3D format. Final length of this reducer is 85 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 20 mm. The two axes of the tubes are offset by 15 mm. The ends feature an external fillet to ease the connection.
Parameter Value Unit
side A length 25 mm
side A outer diameter 116 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 79 mm
side B thickness 2 mm
transition length 40 mm
axis offset 15 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 155–90 mm (Length: 160 mm) (📦 #2572)

1 object(s) - format STL
Tube adapter STL file ⌀ 155–90 mm (Length: 160 mm)
Straight tube adapter ⌀155 mm to ⌀90 mm in STL 3D format. Length of this coupler is 160 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 60 mm, the smaller one of 40 mm. The two axes of the tubes are offset by 25.4 mm. The ends have no fillet.
Parameter Value Unit
side A length 60 mm
side A outer diameter 155 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 90 mm
side B thickness 3 mm
transition length 60 mm
axis offset 25.4 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 116–74 mm (Length: 85 mm) (📦 #8002)

1 object(s) - format STL
Tubing adapter STL file ⌀ 116–74 mm (Length: 85 mm)
Tube adapter ⌀116 mm to ⌀74 mm in STL 3D format. Final length of this junction is 85 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 20 mm. The two axes of the tubes are offset by 15 mm. The ends are rounded on the outside.
Parameter Value Unit
side A length 25 mm
side A outer diameter 116 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 74 mm
side B thickness 2 mm
transition length 40 mm
axis offset 15 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 115–74 mm (Length: 75 mm) (📦 #7998)

1 object(s) - format STL
Tubing adapter STL file ⌀ 115–74 mm (Length: 75 mm)
Inline sleeve ⌀115 mm to ⌀74 mm in STL format. Length of this connector is 75 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 15 mm, the smaller one of 20 mm. The axes of the tubes are offset by 15 mm. The ends are rounded on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 15 mm
side A outer diameter 115 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 74 mm
side B thickness 2 mm
transition length 40 mm
axis offset 15 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 69–28 mm (Length: 85 mm) (📦 #8782)

1 object(s) - format STL
Tubing adapter STL file ⌀ 69–28 mm (Length: 85 mm)
Straight sleeve ⌀69 mm to ⌀28 mm in STL format. Final length of this junction is 85 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 15 mm, the smaller one of 10 mm. The axes of the tubes are off-center by 19.5 mm. The ends are raw.
Parameter Value Unit
side A length 15 mm
side A outer diameter 69 mm
side A thickness 2 mm
side B length 10 mm
side B outer diameter 28 mm
side B thickness 2 mm
transition length 60 mm
axis offset 19.5 mm
ends fillet no fillet

Tube adapter STL file ⌀ 100–60 mm (Length: 70 mm) (📦 #1115)

1 object(s) - format STL (4.9/5) 8 vote(s)
Tube adapter STL file ⌀ 100–60 mm (Length: 70 mm)
Straight tube adapter ⌀100 mm to ⌀60 mm in STL format. Length of this fitting is 70 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 10 mm, the smaller one of 20 mm. The two axes of the tubes are off-center by 15 mm. The ends are rounded on the outside to make tube connection easier.
Parameter Value Unit
side A length 10 mm
side A outer diameter 100 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 60 mm
side B thickness 2 mm
transition length 40 mm
axis offset 15 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 104–75 mm (Length: 130 mm) (📦 #6581)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 104–75 mm (Length: 130 mm)
Straight tube adapter ⌀104 mm to ⌀75 mm in STL format. Length of this coupler is 130 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 40 mm as well. The two axes of the tubes are off-center by 11.4 mm. The ends are raw.
Parameter Value Unit
side A length 40 mm
side A outer diameter 104 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 75 mm
side B thickness 3 mm
transition length 50 mm
axis offset 11.4 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 153–100 mm (Length: 129 mm) (📦 #2766)

1 object(s) - format STL
Tubing adapter STL file ⌀ 153–100 mm (Length: 129 mm)
Inline tubing adapter ⌀153 mm to ⌀100 mm in STL format. Length of this reducer is 129 mm. The larger-diameter tube has a thickness of 2 mm and a sleeve length of 30 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 50 mm. The axes of the tubes are offset by 25.4 mm. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 153 mm
side A thickness 2 mm
side B length 50 mm
side B outer diameter 100 mm
side B thickness 3 mm
transition length 49 mm
axis offset 25.4 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 140–100 mm (Length: 80 mm) (📦 #3857)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 140–100 mm (Length: 80 mm)
Inline tubing adapter ⌀140 mm to ⌀100 mm in STL 3D format. Final length of this junction is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 30 mm. The two axes of the tubes are offset by 19.9 mm. The ends feature an external fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 140 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 100 mm
side B thickness 3 mm
transition length 30 mm
axis offset 19.9 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 94–60 mm (Length: 80 mm) (📦 #1685)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 94–60 mm (Length: 80 mm)
Straight sleeve ⌀94 mm to ⌀60 mm in STL 3D format. Total length of this sleeve is 80 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The two axes of the tubes are offset by 15 mm. The ends are raw.
Parameter Value Unit
side A length 20 mm
side A outer diameter 94 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 60 mm
side B thickness 2 mm
transition length 40 mm
axis offset 15 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 153–86 mm (Length: 160 mm) (📦 #2575)

1 object(s) - format STL
Tubing adapter STL file ⌀ 153–86 mm (Length: 160 mm)
Straight tube connector ⌀153 mm to ⌀86 mm in STL format. Final length of this sleeve is 160 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 60 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 40 mm. The two axes of the tubes are offset by 25.4 mm. The ends are not rounded.
Parameter Value Unit
side A length 60 mm
side A outer diameter 153 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 86 mm
side B thickness 5 mm
transition length 60 mm
axis offset 25.4 mm
ends fillet no fillet

Tube adapter STL file ⌀ 155–90 mm (Length: 160 mm) (📦 #2569)

1 object(s) - format STL
Tube adapter STL file ⌀ 155–90 mm (Length: 160 mm)
Straight tube coupler ⌀155 mm to ⌀90 mm in STL 3D format. Total length of this connector is 160 mm. The larger-diameter tube has a thickness of 4 mm and a length of 60 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 40 mm. The two axes of the tubes are off-center by 25.4 mm. The ends are not rounded.
Parameter Value Unit
side A length 60 mm
side A outer diameter 155 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 90 mm
side B thickness 5 mm
transition length 60 mm
axis offset 25.4 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 155–90 mm (Length: 100 mm) (📦 #2579)

1 object(s) - format STL
Tubing adapter STL file ⌀ 155–90 mm (Length: 100 mm)
Tubing adapter ⌀155 mm to ⌀90 mm in STL 3D format. Total length of this adapter is 100 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 20 mm. The axes of the tubes are off-center by 25.4 mm. The ends have no fillet.
Parameter Value Unit
side A length 40 mm
side A outer diameter 155 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 90 mm
side B thickness 4 mm
transition length 40 mm
axis offset 25.4 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 100–51 mm (Length: 160 mm) (📦 #1340)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 100–51 mm (Length: 160 mm)
Straight tube fitting ⌀100 mm to ⌀51 mm in STL format. Total length of this sleeve is 160 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 60 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 40 mm. The two axes of the tubes are off-center by 25.4 mm. The ends are raw.
Parameter Value Unit
side A length 60 mm
side A outer diameter 100 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 51 mm
side B thickness 5 mm
transition length 60 mm
axis offset 25.4 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 155–105 mm (Length: 205 mm) (📦 #5686)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 155–105 mm (Length: 205 mm)
Inline tubing adapter ⌀155 mm to ⌀105 mm in STL 3D format. Final length of this coupler is 205 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 70 mm, the smaller one of 40 mm. The two axes of the tubes are off-center by 23.9 mm. The ends feature a fillet to make tube connection easier.
Parameter Value Unit
side A length 70 mm
side A outer diameter 155 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 105 mm
side B thickness 3 mm
transition length 95 mm
axis offset 23.9 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 127–50 mm (Length: 120 mm) (📦 #9483)

1 object(s) - format STL
Tubing adapter STL file ⌀ 127–50 mm (Length: 120 mm)
Tube coupler ⌀127 mm to ⌀50 mm in STL 3D format. Final length of this adapter is 120 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends are rounded on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 127 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 50 mm
side B thickness 2 mm
transition length 80 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 83–63 mm (Length: 120 mm) (📦 #2665)

1 object(s) - format STL
Tube adapter STL file ⌀ 83–63 mm (Length: 120 mm)
Tubing adapter ⌀83 mm to ⌀63 mm in STL 3D format. Length of this adapter is 120 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 15 mm, the smaller one of 15 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 15 mm
side A outer diameter 83 mm
side A thickness 3 mm
side B length 15 mm
side B outer diameter 63 mm
side B thickness 3 mm
transition length 90 mm
axis offset 0 mm
ends fillet no fillet