Custom Tubing adapter STL file ⌀ 30–18 mm (Length: 60 mm) 📦#3528

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Inline tube coupler ⌀30 mm to ⌀18 mm in STL format. Final length of this reducer is 60 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 30 mm. The ends have a fillet on the outside to make tube connection easier.
Generation date: 2025-11-22
3D Model Tubing adapter STL file ⌀ 30–18 mm (Length: 60 mm)

3D model download

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  • inline-tube-adapter-lenA20mm-d_model3528-nb0_dd{id}.stl : 4.9 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 30 mm (≃1 3/16 in)
#3 side A thickness 4 mm (≃0.16 in)
#4 side B length 30 mm (≃1 3/16 in)
#5 side B outer diameter 18 mm (≃0.71 in)
#6 side B thickness 4 mm (≃0.16 in)
#7 transition length 10 mm (≃0.39 in)
#8 axis offset 0 mm (0 in)
#9 ends fillet fillet on the outside
Metadata Value
inner diameter (side A) 22 mm (≃7/8 in)
inner diameter (side B) 10 mm (≃0.39 in)
total length 60 mm (≃2 3/8 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 

Tubing adapter STL file ⌀ 15–14 mm (Length: 55 mm) (📦 #8050)

1 object(s) - format STL
Tubing adapter STL file ⌀ 15–14 mm (Length: 55 mm)
Inline tube reducer ⌀15 mm to ⌀14 mm in STL format. Final length of this junction is 55 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 25 mm as well. The ends are rounded on the outside.
Parameter Value Unit
side A length 25 mm
side A outer diameter 15 mm
side A thickness 4 mm
side B length 25 mm
side B outer diameter 14 mm
side B thickness 4 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 40–36 mm (Length: 45 mm) (📦 #5726)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 40–36 mm (Length: 45 mm)
Inline tube junction ⌀40 mm to ⌀36 mm in STL format. Length of this sleeve is 45 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends feature an external fillet to make tube connection easier.
Parameter Value Unit
side A length 20 mm
side A outer diameter 40 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 36 mm
side B thickness 4 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 45–25 mm (Length: 45 mm) (📦 #2421)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 45–25 mm (Length: 45 mm)
Straight sleeve ⌀45 mm to ⌀25 mm in STL 3D format. Length of this coupler is 45 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 ends feature an external fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 45 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 25 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 55–35 mm (Length: 50 mm) (📦 #3882)

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Tube adapter STL 3D file ⌀ 55–35 mm (Length: 50 mm)
Straight sleeve ⌀55 mm to ⌀35 mm in STL format. Final length of this sleeve is 50 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 25 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 20 mm. The ends are rounded on the outside to make tube connection easier.
Parameter Value Unit
side A length 25 mm
side A outer diameter 55 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 50–40 mm (Length: 45 mm) (📦 #1094)

1 object(s) - format STL (5.0/5) 4 vote(s)
Tube adapter STL file ⌀ 50–40 mm (Length: 45 mm)
Straight tube reducer ⌀50 mm to ⌀40 mm in STL 3D format. Total length of this reducer is 45 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 ends are rounded on the outside to ease the connection.
Parameter Value Unit
side A length 20 mm
side A outer diameter 50 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 40 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 27–16 mm (Length: 60 mm) (📦 #9947)

1 object(s) - format STL
Tubing adapter STL file ⌀ 27–16 mm (Length: 60 mm)
Straight tube reducer ⌀27 mm to ⌀16 mm in STL 3D format. Total length of this reducer is 60 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 axes of the tubes are offset by 5.4 mm. The ends have a fillet on the outside.
Parameter Value Unit
side A length 20 mm
side A outer diameter 27 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 16 mm
side B thickness 3 mm
transition length 10 mm
axis offset 5.4 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 32–15 mm (Length: 21 mm) (📦 #2449)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 32–15 mm (Length: 21 mm)
Straight tube adapter ⌀32 mm to ⌀15 mm in STL 3D format. Length of this reducer is 21 mm. The thickness of the tubes is identical: 3.5 mm. The larger-diameter tube has a sleeve length of 7 mm, the smaller one of 7 mm as well. The ends feature an external fillet.
Parameter Value Unit
side A length 7 mm
side A outer diameter 32 mm
side A thickness 3.5 mm
side B length 7 mm
side B outer diameter 15 mm
side B thickness 3.5 mm
transition length 7 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 44–40 mm (Length: 95 mm) (📦 #9512)

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Tube adapter STL 3D file ⌀ 44–40 mm (Length: 95 mm)
Tube junction ⌀44 mm to ⌀40 mm in STL format. Final length of this junction is 95 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 40 mm as well. The ends have a fillet on the outside to ease the connection.
Parameter Value Unit
side A length 40 mm
side A outer diameter 44 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 40 mm
side B thickness 4 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 39–24 mm (Length: 60 mm) (📦 #9340)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 39–24 mm (Length: 60 mm)
Tube coupler ⌀39 mm to ⌀24 mm in STL 3D format. Final length of this connector is 60 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 25 mm. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 39 mm
side A thickness 4 mm
side B length 25 mm
side B outer diameter 24 mm
side B thickness 4 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 32–15 mm (Length: 50 mm) (📦 #2441)

1 object(s) - format STL
Tube adapter STL file ⌀ 32–15 mm (Length: 50 mm)
Inline tube reducer ⌀32 mm to ⌀15 mm in STL format. Length of this adapter is 50 mm. The thickness of the tubes is identical: 3.5 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends feature an internal fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 32 mm
side A thickness 3.5 mm
side B length 20 mm
side B outer diameter 15 mm
side B thickness 3.5 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 40–24 mm (Length: 75 mm) (📦 #9341)

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Tubing adapter STL 3D file ⌀ 40–24 mm (Length: 75 mm)
Inline tube reducer ⌀40 mm to ⌀24 mm in STL format. Length of this adapter is 75 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 25 mm. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 40 mm
side A thickness 4 mm
side B length 25 mm
side B outer diameter 24 mm
side B thickness 4 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 44–24 mm (Length: 75 mm) (📦 #9350)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 44–24 mm (Length: 75 mm)
Inline tube adapter ⌀44 mm to ⌀24 mm in STL 3D format. Final length of this adapter is 75 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 25 mm. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 44 mm
side A thickness 4 mm
side B length 25 mm
side B outer diameter 24 mm
side B thickness 4 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 29–25 mm (Length: 40 mm) (📦 #7794)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 29–25 mm (Length: 40 mm)
Inline tubing adapter ⌀29 mm to ⌀25 mm in STL format. Final length of this adapter is 40 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 10 mm. The ends are not rounded.
Parameter Value Unit
side A length 20 mm
side A outer diameter 29 mm
side A thickness 4 mm
side B length 10 mm
side B outer diameter 25 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 42–40 mm (Length: 95 mm) (📦 #5850)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 42–40 mm (Length: 95 mm)
Straight tube coupler ⌀42 mm to ⌀40 mm in STL 3D format. Total length of this coupler is 95 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 40 mm, the smaller one of 50 mm. The ends have a fillet on the outside.
Parameter Value Unit
side A length 40 mm
side A outer diameter 42 mm
side A thickness 4 mm
side B length 50 mm
side B outer diameter 40 mm
side B thickness 4 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 48–40 mm (Length: 75 mm) (📦 #9505)

1 object(s) - format STL
Tube adapter STL file ⌀ 48–40 mm (Length: 75 mm)
Inline tube coupler ⌀48 mm to ⌀40 mm in STL format. Total length of this connector is 75 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 30 mm. The ends have no fillet.
Parameter Value Unit
side A length 25 mm
side A outer diameter 48 mm
side A thickness 4 mm
side B length 30 mm
side B outer diameter 40 mm
side B thickness 4 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 27–16 mm (Length: 60 mm) (📦 #9909)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 27–16 mm (Length: 60 mm)
Tube reducer ⌀27 mm to ⌀16 mm in STL 3D format. Total length of this reducer is 60 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 ends feature an internal fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 27 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 16 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 62–51 mm (Length: 45 mm) (📦 #7928)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 62–51 mm (Length: 45 mm)
Inline tube adapter ⌀62 mm to ⌀51 mm in STL format. Total length of this sleeve is 45 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 axes of the tubes are off-center by 0.1 mm. The ends are rounded on the outside.
Parameter Value Unit
side A length 20 mm
side A outer diameter 62 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 51 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0.1 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 37–25 mm (Length: 30 mm) (📦 #7795)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 37–25 mm (Length: 30 mm)
Tube connector ⌀37 mm to ⌀25 mm in STL 3D format. Final length of this sleeve is 30 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 10 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 10 mm
side A outer diameter 37 mm
side A thickness 4 mm
side B length 10 mm
side B outer diameter 25 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 52–24 mm (Length: 40 mm) (📦 #7384)

1 object(s) - format STL
Tubing adapter STL file ⌀ 52–24 mm (Length: 40 mm)
Straight tubing adapter ⌀52 mm to ⌀24 mm in STL 3D format. Total length of this fitting is 40 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 10 mm. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 52 mm
side A thickness 4 mm
side B length 10 mm
side B outer diameter 24 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 24–10 mm (Length: 90 mm) (📦 #3388)

1 object(s) - format STL
Tube adapter STL file ⌀ 24–10 mm (Length: 90 mm)
Tubing adapter ⌀24 mm to ⌀10 mm in STL 3D format. Length of this fitting is 90 mm. The larger-diameter tube has a thickness of 2.8 mm and a length of 30 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 30 mm as well. The ends feature an external fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 24 mm
side A thickness 2.8 mm
side B length 30 mm
side B outer diameter 10 mm
side B thickness 3 mm
transition length 30 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 32–17 mm (Length: 70 mm) (📦 #9496)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 32–17 mm (Length: 70 mm)
Tubing reducer ⌀32 mm to ⌀17 mm in STL 3D format. Final length of this junction is 70 mm. The larger-diameter tube has a thickness of 5 mm and a sleeve length of 25 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 30 mm. The ends are not rounded.
Parameter Value Unit
side A length 25 mm
side A outer diameter 32 mm
side A thickness 5 mm
side B length 30 mm
side B outer diameter 17 mm
side B thickness 3 mm
transition length 15 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 48–32 mm (Length: 75 mm) (📦 #9506)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 48–32 mm (Length: 75 mm)
Tube fitting ⌀48 mm to ⌀32 mm in STL format. Length of this fitting is 75 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 25 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 30 mm. The ends have no fillet.
Parameter Value Unit
side A length 25 mm
side A outer diameter 48 mm
side A thickness 4 mm
side B length 30 mm
side B outer diameter 32 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 48–44 mm (Length: 45 mm) (📦 #9541)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 48–44 mm (Length: 45 mm)
Tube connector ⌀48 mm to ⌀44 mm in STL format. Final length of this sleeve is 45 mm. The thickness of the tubes is identical: 4 mm. The larger-diameter tube has a sleeve length of 20 mm, the smaller one of 20 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 20 mm
side A outer diameter 48 mm
side A thickness 4 mm
side B length 20 mm
side B outer diameter 44 mm
side B thickness 4 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 19–9 mm (Length: 45 mm) (📦 #4915)

1 object(s) - format STL
Tubing adapter STL file ⌀ 19–9 mm (Length: 45 mm)
Inline tube junction ⌀19 mm to ⌀9 mm in STL format. Length of this reducer is 45 mm. The larger-diameter tube has a thickness of 5 mm and a sleeve length of 20 mm. The smaller-diameter tube has a thickness of 4 mm and a length of 15 mm. The ends are raw.
Parameter Value Unit
side A length 20 mm
side A outer diameter 19 mm
side A thickness 5 mm
side B length 15 mm
side B outer diameter 9 mm
side B thickness 4 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 24–9 mm (Length: 45 mm) (📦 #3387)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 24–9 mm (Length: 45 mm)
Straight tube connector ⌀24 mm to ⌀9 mm in STL format. Final length of this reducer is 45 mm. The thickness of the tubes is identical: 2.7 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 10 mm. The ends have a fillet on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 24 mm
side A thickness 2.7 mm
side B length 10 mm
side B outer diameter 9 mm
side B thickness 2.7 mm
transition length 15 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 32–29 mm (Length: 85 mm) (📦 #8232)

1 object(s) - format STL
Tube adapter STL file ⌀ 32–29 mm (Length: 85 mm)
Tube junction ⌀32 mm to ⌀29 mm in STL 3D format. Total length of this connector is 85 mm. The larger-diameter tube has a thickness of 4 mm and a sleeve length of 35 mm. The smaller-diameter tube has a thickness of 5 mm and a length of 30 mm. The ends are raw.
Parameter Value Unit
side A length 35 mm
side A outer diameter 32 mm
side A thickness 4 mm
side B length 30 mm
side B outer diameter 29 mm
side B thickness 5 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 62–55 mm (Length: 65 mm) (📦 #7948)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 62–55 mm (Length: 65 mm)
Tubing adapter ⌀62 mm to ⌀55 mm in STL 3D format. Final length of this adapter is 65 mm. The larger-diameter tube has a thickness of 4 mm and a length of 20 mm. The smaller-diameter tube has a thickness of 3 mm and a length of 40 mm. The ends feature an external fillet to make tube connection easier.
Parameter Value Unit
side A length 20 mm
side A outer diameter 62 mm
side A thickness 4 mm
side B length 40 mm
side B outer diameter 55 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 20–16 mm (Length: 50 mm) (📦 #9848)

1 object(s) - format STL
Tube adapter STL file ⌀ 20–16 mm (Length: 50 mm)
Tube coupler ⌀20 mm to ⌀16 mm in STL format. Length of this sleeve is 50 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 25 mm, the smaller one of 20 mm. The ends are raw.
Parameter Value Unit
side A length 25 mm
side A outer diameter 20 mm
side A thickness 3 mm
side B length 20 mm
side B outer diameter 16 mm
side B thickness 3 mm
transition length 5 mm
axis offset 0 mm
ends fillet no fillet