Custom Tube adapter STL file ⌀ 38–36 mm (Length: 110 mm) 📦#4053

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Inline fitting ⌀38 mm to ⌀36 mm in STL 3D format. Final length of this adapter is 110 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 ends are rounded on the inside.
Generation date: 2025-11-29
3D Model Tube adapter STL file ⌀ 38–36 mm (Length: 110 mm)

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  • inline-tube-adapter-lenA40mm-d_model4053-nb0_dd{id}.stl : 3.5 Mo
STL Mesh quality : Linear deflection 0.05 Angular deflection 0.05
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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 40 mm (≃1 9/16 in)
#2 side A outer diameter 38 mm (≃1 1/2 in)
#3 side A thickness 2 mm (≃0.08 in)
#4 side B length 40 mm (≃1 9/16 in)
#5 side B outer diameter 36 mm (≃1.42 in)
#6 side B thickness 2 mm (≃0.08 in)
#7 transition length 30 mm (≃1 3/16 in)
#8 axis offset 0 mm (0 in)
#9 ends fillet fillet on the inside
Metadata Value
inner diameter (side A) 34 mm (≃1.34 in)
inner diameter (side B) 32 mm (≃1 1/4 in)
total length 110 mm (≃4.33 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 ⌀ 41–33 mm (Length: 100 mm) (📦 #5928)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 41–33 mm (Length: 100 mm)
Tube fitting ⌀41 mm to ⌀33 mm in STL 3D format. Total length of this connector is 100 mm. The thickness of the tubes is identical: 3 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 inside.
Parameter Value Unit
side A length 40 mm
side A outer diameter 41 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 33 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 75–25 mm (Length: 110 mm) (📦 #4283)

1 object(s) - format STL
Tubing adapter STL file ⌀ 75–25 mm (Length: 110 mm)
Tube adapter ⌀75 mm to ⌀25 mm in STL format. Final length of this coupler is 110 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 40 mm. The ends are rounded on the inside to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 75 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 25 mm
side B thickness 2 mm
transition length 40 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 54–39 mm (Length: 120 mm) (📦 #6800)

1 object(s) - format STL
Tubing adapter STL file ⌀ 54–39 mm (Length: 120 mm)
Tubing reducer ⌀54 mm to ⌀39 mm in STL 3D format. Length of this connector is 120 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 ends are rounded on the inside.
Parameter Value Unit
side A length 40 mm
side A outer diameter 54 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 39 mm
side B thickness 3 mm
transition length 40 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 44–35 mm (Length: 88 mm) (📦 #5253)

1 object(s) - format STL
Tube adapter STL file ⌀ 44–35 mm (Length: 88 mm)
Inline sleeve ⌀44 mm to ⌀35 mm in STL 3D format. Length of this sleeve is 88 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 29 mm. The ends have a fillet on the inside.
Parameter Value Unit
side A length 30 mm
side A outer diameter 44 mm
side A thickness 3 mm
side B length 29 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 29 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 43–33 mm (Length: 88 mm) (📦 #5244)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 43–33 mm (Length: 88 mm)
Straight tube coupler ⌀43 mm to ⌀33 mm in STL format. Total length of this reducer is 88 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 29 mm. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 43 mm
side A thickness 3 mm
side B length 29 mm
side B outer diameter 33 mm
side B thickness 3 mm
transition length 29 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 59–50 mm (Length: 70 mm) (📦 #8535)

1 object(s) - format STL
Tubing adapter STL file ⌀ 59–50 mm (Length: 70 mm)
Straight tube connector ⌀59 mm to ⌀50 mm in STL format. Length of this sleeve is 70 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 25 mm as well. The ends are rounded on the inside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 25 mm
side A outer diameter 59 mm
side A thickness 2 mm
side B length 25 mm
side B outer diameter 50 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 56–50 mm (Length: 100 mm) (📦 #3303)

1 object(s) - format STL
Tubing adapter STL file ⌀ 56–50 mm (Length: 100 mm)
Straight tube coupler ⌀56 mm to ⌀50 mm in STL 3D format. Length of this sleeve is 100 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends feature an internal fillet to make tube connection easier.
Parameter Value Unit
side A length 40 mm
side A outer diameter 56 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 50 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 40–35 mm (Length: 79 mm) (📦 #5081)

1 object(s) - format STL
Tube adapter STL file ⌀ 40–35 mm (Length: 79 mm)
Inline tubing adapter ⌀40 mm to ⌀35 mm in STL 3D format. Final length of this junction is 79 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 29 mm. The ends are rounded on the inside to make tube connection easier.
Parameter Value Unit
side A length 30 mm
side A outer diameter 40 mm
side A thickness 3 mm
side B length 29 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 50–40 mm (Length: 100 mm) (📦 #1125)

1 object(s) - format STL (4.0/5) 1 vote(s)
Tube adapter STL file ⌀ 50–40 mm (Length: 100 mm)
Straight tube fitting ⌀50 mm to ⌀40 mm in STL format. Length of this reducer is 100 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 ends have a fillet to ease the connection.
Parameter Value Unit
side A length 40 mm
side A outer diameter 50 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 40 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 67–33 mm (Length: 89 mm) (📦 #5243)

1 object(s) - format STL
Tube adapter STL file ⌀ 67–33 mm (Length: 89 mm)
Straight tube adapter ⌀67 mm to ⌀33 mm in STL 3D format. Final length of this sleeve is 89 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have a fillet on the inside to make tube connection easier.
Parameter Value Unit
side A length 30 mm
side A outer diameter 67 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 33 mm
side B thickness 3 mm
transition length 29 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 67–43 mm (Length: 89 mm) (📦 #5241)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 67–43 mm (Length: 89 mm)
Tube adapter ⌀67 mm to ⌀43 mm in STL 3D format. Length of this junction is 89 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 30 mm as well. The ends are rounded on the inside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 67 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 43 mm
side B thickness 3 mm
transition length 29 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL 3D file ⌀ 37–34 mm (Length: 90 mm) (📦 #5893)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 37–34 mm (Length: 90 mm)
Straight sleeve ⌀37 mm to ⌀34 mm in STL 3D format. Length of this coupler is 90 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 40 mm, the smaller one of 40 mm as well. The ends feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 40 mm
side A outer diameter 37 mm
side A thickness 3 mm
side B length 40 mm
side B outer diameter 34 mm
side B thickness 3 mm
transition length 10 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 50–20 mm (Length: 80 mm) (📦 #8575)

1 object(s) - format STL
Tubing adapter STL file ⌀ 50–20 mm (Length: 80 mm)
Tube reducer ⌀50 mm to ⌀20 mm in STL format. Final length of this fitting is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends feature an internal fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 50 mm
side A thickness 3 mm
side B length 30 mm
side B outer diameter 20 mm
side B thickness 3 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 67–40 mm (Length: 120 mm) (📦 #6288)

1 object(s) - format STL
Tubing adapter STL file ⌀ 67–40 mm (Length: 120 mm)
Diameter adapter ⌀67 mm to ⌀40 mm in STL 3D format. Length of this sleeve is 120 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 45 mm, the smaller one of 40 mm. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 45 mm
side A outer diameter 67 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 40 mm
side B thickness 2 mm
transition length 35 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 50–25 mm (Length: 90 mm) (📦 #7361)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 50–25 mm (Length: 90 mm)
Tube junction ⌀50 mm to ⌀25 mm in STL format. Final length of this adapter is 90 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have a fillet to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 50 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 25 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 67–41 mm (Length: 120 mm) (📦 #6335)

1 object(s) - format STL
Tube adapter STL file ⌀ 67–41 mm (Length: 120 mm)
Inline tube coupler ⌀67 mm to ⌀41 mm in STL format. Length of this reducer is 120 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 45 mm, the smaller one of 40 mm. The ends are rounded to ease the connection.
Parameter Value Unit
side A length 45 mm
side A outer diameter 67 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 41 mm
side B thickness 2 mm
transition length 35 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 67–43 mm (Length: 119 mm) (📦 #6413)

1 object(s) - format STL
Tube adapter STL file ⌀ 67–43 mm (Length: 119 mm)
Tube fitting ⌀67 mm to ⌀43 mm in STL format. Length of this coupler is 119 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 45 mm, the smaller one of 40 mm. The ends feature a fillet to ease the connection.
Parameter Value Unit
side A length 45 mm
side A outer diameter 67 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 43 mm
side B thickness 2 mm
transition length 34 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 64–32 mm (Length: 80 mm) (📦 #2791)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 64–32 mm (Length: 80 mm)
Inline tubing adapter ⌀64 mm to ⌀32 mm in STL 3D format. Total length of this reducer is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have a fillet on the inside to ease the connection.
Parameter Value Unit
side A length 30 mm
side A outer diameter 64 mm
side A thickness 3 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 fillet on th...

Tube adapter STL file ⌀ 67–45 mm (Length: 120 mm) (📦 #6366)

1 object(s) - format STL
Tube adapter STL file ⌀ 67–45 mm (Length: 120 mm)
Diameter adapter ⌀67 mm to ⌀45 mm in STL format. Total length of this coupler is 120 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 45 mm, the smaller one of 40 mm. The ends are rounded to make tube connection easier.
Parameter Value Unit
side A length 45 mm
side A outer diameter 67 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 45 mm
side B thickness 2 mm
transition length 35 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL 3D file ⌀ 46–39 mm (Length: 80 mm) (📦 #4835)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 46–39 mm (Length: 80 mm)
Inline tube coupler ⌀46 mm to ⌀39 mm in STL 3D format. Total length of this fitting is 80 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have a fillet to make tube connection easier.
Parameter Value Unit
side A length 30 mm
side A outer diameter 46 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 39 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 78–50 mm (Length: 80 mm) (📦 #1361)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 78–50 mm (Length: 80 mm)
Tube connector ⌀78 mm to ⌀50 mm in STL 3D format. Length of this junction is 80 mm. The thickness of the tubes is identical: 2 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 1 mm. The ends have a fillet on the inside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 40 mm
side A outer diameter 78 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 50 mm
side B thickness 2 mm
transition length 20 mm
axis offset 1 mm
ends fillet fillet on th...

Tube adapter STL file ⌀ 30–17 mm (Length: 90 mm) (📦 #2119)

1 object(s) - format STL
Tube adapter STL file ⌀ 30–17 mm (Length: 90 mm)
Inline tube coupler ⌀30 mm to ⌀17 mm in STL format. Length of this junction is 90 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 ends are rounded to make tube connection easier.
Parameter Value Unit
side A length 30 mm
side A outer diameter 30 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 17 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet fillet on bo...

Tubing adapter STL file ⌀ 40–16 mm (Length: 110 mm) (📦 #3485)

1 object(s) - format STL
Tubing adapter STL file ⌀ 40–16 mm (Length: 110 mm)
Straight tube coupler ⌀40 mm to ⌀16 mm in STL 3D format. Total length of this sleeve is 110 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 50 mm, the smaller one of 30 mm. The ends feature a fillet to ease the connection.
Parameter Value Unit
side A length 50 mm
side A outer diameter 40 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 16 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL file ⌀ 54–44 mm (Length: 80 mm) (📦 #4484)

1 object(s) - format STL
Tube adapter STL file ⌀ 54–44 mm (Length: 80 mm)
Inline sleeve ⌀54 mm to ⌀44 mm in STL format. Length of this sleeve is 80 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 ends have a fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 54 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 44 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on bo...

Tube adapter STL 3D file ⌀ 32–25 mm (Length: 80 mm) (📦 #9682)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 32–25 mm (Length: 80 mm)
Inline tube adapter ⌀32 mm to ⌀25 mm in STL format. Total length of this junction is 80 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 35 mm. The ends are rounded on the outside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 25 mm
side A outer diameter 32 mm
side A thickness 2 mm
side B length 35 mm
side B outer diameter 25 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 32–15 mm (Length: 60 mm) (📦 #2442)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 32–15 mm (Length: 60 mm)
Tube coupler ⌀32 mm to ⌀15 mm in STL format. Length of this junction is 60 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 feature an internal fillet to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 20 mm
side A outer diameter 32 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 15 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet fillet on th...

Tubing adapter STL file ⌀ 40–35 mm (Length: 130 mm) (📦 #4500)

1 object(s) - format STL
Tubing adapter STL file ⌀ 40–35 mm (Length: 130 mm)
Tube junction ⌀40 mm to ⌀35 mm in STL 3D format. Total length of this coupler is 130 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a length of 30 mm, the smaller one of 50 mm. The ends have a fillet on the inside to facilitate the connection of the two tubes.
Parameter Value Unit
side A length 30 mm
side A outer diameter 40 mm
side A thickness 3 mm
side B length 50 mm
side B outer diameter 35 mm
side B thickness 3 mm
transition length 50 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 68–39 mm (Length: 130 mm) (📦 #3348)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 68–39 mm (Length: 130 mm)
Inline tubing adapter ⌀68 mm to ⌀39 mm in STL 3D format. Final length of this reducer is 130 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 35 mm, the smaller one of 70 mm. The ends are rounded on the inside to ease the connection.
Parameter Value Unit
side A length 35 mm
side A outer diameter 68 mm
side A thickness 2 mm
side B length 70 mm
side B outer diameter 39 mm
side B thickness 2 mm
transition length 25 mm
axis offset 0 mm
ends fillet fillet on th...

Tube adapter STL 3D file ⌀ 35–23 mm (Length: 80 mm) (📦 #2124)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 35–23 mm (Length: 80 mm)
Tube reducer ⌀35 mm to ⌀23 mm in STL format. Final length of this coupler is 80 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 25 mm as well. The ends have a fillet.
Parameter Value Unit
side A length 25 mm
side A outer diameter 35 mm
side A thickness 2 mm
side B length 25 mm
side B outer diameter 23 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet fillet on bo...