Custom Tube adapter STL file ⌀ 31–15 mm (Length: 75 mm) 📦#5849

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Inline tubing adapter ⌀31 mm to ⌀15 mm in STL format. Total length of this junction is 75 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 30 mm. The axes of the tubes are offset by 5 mm. The ends have no fillet.
Generation date: 2026-01-03
3D Model Tube adapter STL file ⌀ 31–15 mm (Length: 75 mm)

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  • inline-tube-adapter-lenA20mm-d_model5849-nb0_dd{id}.stl : 1.5 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 31 mm (≃1.22 in)
#3 side A thickness 2 mm (≃0.08 in)
#4 side B length 30 mm (≃1 3/16 in)
#5 side B outer diameter 15 mm (≃0.59 in)
#6 side B thickness 2 mm (≃0.08 in)
#7 transition length 25 mm (≃0.98 in)
#8 axis offset 5 mm (≃3/16 in)
#9 ends fillet no fillet
Metadata Value
inner diameter (side A) 27 mm (≃1 1/16 in)
inner diameter (side B) 11 mm (≃7/16 in)
total length 75 mm (≃2 15/16 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

Related 3D models

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

Tube adapter STL 3D file ⌀ 25–11 mm (Length: 65 mm) (📦 #4176)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 25–11 mm (Length: 65 mm)
Tube adapter ⌀25 mm to ⌀11 mm in STL format. Final length of this connector is 65 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 15 mm. The axes of the tubes are off-center by 3.1 mm. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 25 mm
side A thickness 2 mm
side B length 15 mm
side B outer diameter 11 mm
side B thickness 2 mm
transition length 20 mm
axis offset 3.1 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 43–10 mm (Length: 80 mm) (📦 #3379)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 43–10 mm (Length: 80 mm)
Inline tubing adapter ⌀43 mm to ⌀10 mm in STL 3D format. Total length of this reducer 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 no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 43 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 10 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 12–9 mm (Length: 65 mm) (📦 #2845)

1 object(s) - format STL
Tubing adapter STL file ⌀ 12–9 mm (Length: 65 mm)
Straight sleeve ⌀12 mm to ⌀9 mm in STL 3D format. Final length of this junction is 65 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 have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 12 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 9 mm
side B thickness 2 mm
transition length 25 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 12–6 mm (Length: 65 mm) (📦 #2844)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 12–6 mm (Length: 65 mm)
Straight tube reducer ⌀12 mm to ⌀6 mm in STL format. Total length of this connector is 65 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 20 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 12 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 6 mm
side B thickness 2 mm
transition length 25 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 44–16 mm (Length: 90 mm) (📦 #1270)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 44–16 mm (Length: 90 mm)
Inline fitting ⌀44 mm to ⌀16 mm in STL format. Final length of this sleeve is 90 mm. The larger-diameter tube has a thickness of 2.5 mm and a sleeve length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 44 mm
side A thickness 2.5 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 no fillet

Tube adapter STL file ⌀ 21–9 mm (Length: 42 mm) (📦 #4164)

1 object(s) - format STL
Tube adapter STL file ⌀ 21–9 mm (Length: 42 mm)
Tubing adapter ⌀21 mm to ⌀9 mm in STL 3D format. Final length of this reducer is 42 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 12 mm. The two axes of the tubes are offset by 3.1 mm. The ends are raw.
Parameter Value Unit
side A length 10 mm
side A outer diameter 21 mm
side A thickness 2 mm
side B length 12 mm
side B outer diameter 9 mm
side B thickness 2 mm
transition length 20 mm
axis offset 3.1 mm
ends fillet no fillet

Tube adapter STL file ⌀ 45–15 mm (Length: 90 mm) (📦 #1272)

1 object(s) - format STL
Tube adapter STL file ⌀ 45–15 mm (Length: 90 mm)
Tube coupler ⌀45 mm to ⌀15 mm in STL format. Total length of this sleeve is 90 mm. The larger-diameter tube has a thickness of 2.5 mm and a sleeve length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 30 mm as well. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 45 mm
side A thickness 2.5 mm
side B length 30 mm
side B outer diameter 15 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 45–10 mm (Length: 90 mm) (📦 #1260)

1 object(s) - format STL (4.0/5) 1 vote(s)
Tube adapter STL 3D file ⌀ 45–10 mm (Length: 90 mm)
Inline sleeve ⌀45 mm to ⌀10 mm in STL format. Total length of this connector is 90 mm. The larger-diameter tube has a thickness of 2.5 mm and a length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 30 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 45 mm
side A thickness 2.5 mm
side B length 30 mm
side B outer diameter 10 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 45–9 mm (Length: 90 mm) (📦 #1271)

1 object(s) - format STL
Tube adapter STL file ⌀ 45–9 mm (Length: 90 mm)
Straight tube connector ⌀45 mm to ⌀9 mm in STL 3D format. Total length of this fitting is 90 mm. The larger-diameter tube has a thickness of 2.5 mm and a length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 30 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 45 mm
side A thickness 2.5 mm
side B length 30 mm
side B outer diameter 9 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 10–8 mm (Length: 70 mm) (📦 #2847)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 10–8 mm (Length: 70 mm)
Inline sleeve ⌀10 mm to ⌀8 mm in STL format. Length of this junction is 70 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 raw.
Parameter Value Unit
side A length 20 mm
side A outer diameter 10 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 8 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 33–19 mm (Length: 60 mm) (📦 #7943)

1 object(s) - format STL
Tube adapter STL file ⌀ 33–19 mm (Length: 60 mm)
Inline tube reducer ⌀33 mm to ⌀19 mm in STL format. Final length of this reducer is 60 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 15 mm. The ends are not rounded.
Parameter Value Unit
side A length 25 mm
side A outer diameter 33 mm
side A thickness 2 mm
side B length 15 mm
side B outer diameter 19 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 35–19 mm (Length: 60 mm) (📦 #7901)

1 object(s) - format STL
Tube adapter STL file ⌀ 35–19 mm (Length: 60 mm)
Tube coupler ⌀35 mm to ⌀19 mm in STL format. Length of this sleeve is 60 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 15 mm. The ends are raw.
Parameter Value Unit
side A length 25 mm
side A outer diameter 35 mm
side A thickness 2 mm
side B length 15 mm
side B outer diameter 19 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 54–10 mm (Length: 80 mm) (📦 #8959)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 54–10 mm (Length: 80 mm)
Inline tube reducer ⌀54 mm to ⌀10 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 are not rounded.
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 10 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 23–16 mm (Length: 45 mm) (📦 #1835)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 23–16 mm (Length: 45 mm)
Inline tube junction ⌀23 mm to ⌀16 mm in STL format. Final length of this sleeve is 45 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 5 mm, the smaller one of 30 mm. The axes of the tubes are off-center by 2.5 mm. The ends are raw.
Parameter Value Unit
side A length 5 mm
side A outer diameter 23 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 16 mm
side B thickness 2 mm
transition length 10 mm
axis offset 2.5 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 37–33 mm (Length: 80 mm) (📦 #3410)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 37–33 mm (Length: 80 mm)
Inline tubing adapter ⌀37 mm to ⌀33 mm in STL format. Final 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 30 mm, the smaller one of 30 mm as well. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 37 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 33 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 39–33 mm (Length: 90 mm) (📦 #3411)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 39–33 mm (Length: 90 mm)
Straight tube fitting ⌀39 mm to ⌀33 mm in STL format. Total length of this reducer 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 are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 39 mm
side A thickness 2 mm
side B length 30 mm
side B outer diameter 33 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 45–10 mm (Length: 97 mm) (📦 #1443)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 45–10 mm (Length: 97 mm)
Inline tube junction ⌀45 mm to ⌀10 mm in STL 3D format. Total length of this fitting is 97 mm. The larger-diameter tube has a thickness of 2.5 mm and a sleeve length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 37 mm. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 45 mm
side A thickness 2.5 mm
side B length 37 mm
side B outer diameter 10 mm
side B thickness 2 mm
transition length 30 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 14–13 mm (Length: 70 mm) (📦 #2052)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 14–13 mm (Length: 70 mm)
Inline tube adapter ⌀14 mm to ⌀13 mm in STL 3D format. Length of this coupler is 70 mm. The larger-diameter tube has a thickness of 2.1 mm and a sleeve length of 30 mm. The smaller-diameter tube has a thickness of 2 mm and a length of 20 mm. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 14 mm
side A thickness 2.1 mm
side B length 20 mm
side B outer diameter 13 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 44–24 mm (Length: 90 mm) (📦 #2322)

1 object(s) - format STL
Tube adapter STL file ⌀ 44–24 mm (Length: 90 mm)
Straight tube adapter ⌀44 mm to ⌀24 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 sleeve length of 30 mm, the smaller one of 40 mm. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 44 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 24 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 27–12 mm (Length: 65 mm) (📦 #9299)

1 object(s) - format STL
Tubing adapter STL file ⌀ 27–12 mm (Length: 65 mm)
Inline tubing adapter ⌀27 mm to ⌀12 mm in STL 3D format. Total length of this fitting is 65 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 20 mm. The ends are not rounded.
Parameter Value Unit
side A length 30 mm
side A outer diameter 27 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 12 mm
side B thickness 2 mm
transition length 15 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 38–9 mm (Length: 60 mm) (📦 #8875)

1 object(s) - format STL
Tube adapter STL file ⌀ 38–9 mm (Length: 60 mm)
Tube adapter ⌀38 mm to ⌀9 mm in STL 3D format. Length of this sleeve is 60 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 not rounded.
Parameter Value Unit
side A length 25 mm
side A outer diameter 38 mm
side A thickness 2 mm
side B length 25 mm
side B outer diameter 9 mm
side B thickness 2 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL file ⌀ 23–7 mm (Length: 63 mm) (📦 #6196)

1 object(s) - format STL
Tubing adapter STL file ⌀ 23–7 mm (Length: 63 mm)
Tubing adapter ⌀23 mm to ⌀7 mm in STL 3D format. Final length of this junction is 63 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 7 mm, the smaller one of 38 mm. The ends are not rounded.
Parameter Value Unit
side A length 7 mm
side A outer diameter 23 mm
side A thickness 2 mm
side B length 38 mm
side B outer diameter 7 mm
side B thickness 2 mm
transition length 18 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 39–29 mm (Length: 90 mm) (📦 #2319)

1 object(s) - format STL
Tube adapter STL file ⌀ 39–29 mm (Length: 90 mm)
Tube coupler ⌀39 mm to ⌀29 mm in STL format. Final length of this coupler 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 40 mm. The ends are raw.
Parameter Value Unit
side A length 30 mm
side A outer diameter 39 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 29 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 40–29 mm (Length: 90 mm) (📦 #2321)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 40–29 mm (Length: 90 mm)
Inline tube coupler ⌀40 mm to ⌀29 mm in STL 3D format. Total length of this connector 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 40 mm. The ends have no fillet.
Parameter Value Unit
side A length 30 mm
side A outer diameter 40 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 29 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL 3D file ⌀ 16–9 mm (Length: 40 mm) (📦 #1924)

1 object(s) - format STL
Tube adapter STL 3D file ⌀ 16–9 mm (Length: 40 mm)
Inline tube junction ⌀16 mm to ⌀9 mm in STL format. Final length of this coupler is 40 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 10 mm, the smaller one of 10 mm as well. The axes of the tubes are offset by 3.1 mm. The ends are not rounded.
Parameter Value Unit
side A length 10 mm
side A outer diameter 16 mm
side A thickness 2 mm
side B length 10 mm
side B outer diameter 9 mm
side B thickness 2 mm
transition length 20 mm
axis offset 3.1 mm
ends fillet no fillet

Tube adapter STL file ⌀ 35–15 mm (Length: 55 mm) (📦 #7897)

1 object(s) - format STL
Tube adapter STL file ⌀ 35–15 mm (Length: 55 mm)
Tube adapter ⌀35 mm to ⌀15 mm in STL 3D format. Total length of this adapter is 55 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 25 mm, the smaller one of 15 mm. The ends are raw.
Parameter Value Unit
side A length 25 mm
side A outer diameter 35 mm
side A thickness 2 mm
side B length 15 mm
side B outer diameter 15 mm
side B thickness 2 mm
transition length 15 mm
axis offset 0 mm
ends fillet no fillet

Tubing adapter STL 3D file ⌀ 39–36 mm (Length: 60 mm) (📦 #6845)

1 object(s) - format STL
Tubing adapter STL 3D file ⌀ 39–36 mm (Length: 60 mm)
Inline tube coupler ⌀39 mm to ⌀36 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 sleeve length of 20 mm, the smaller one of 20 mm as well. The ends have no fillet.
Parameter Value Unit
side A length 20 mm
side A outer diameter 39 mm
side A thickness 2 mm
side B length 20 mm
side B outer diameter 36 mm
side B thickness 2 mm
transition length 20 mm
axis offset 0 mm
ends fillet no fillet

Tube adapter STL file ⌀ 15–9 mm (Length: 40 mm) (📦 #1925)

1 object(s) - format STL
Tube adapter STL file ⌀ 15–9 mm (Length: 40 mm)
Tube adapter ⌀15 mm to ⌀9 mm in STL 3D format. Total length of this adapter is 40 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 10 mm as well. The two axes of the tubes are offset by 2.9 mm. The ends are not rounded.
Parameter Value Unit
side A length 10 mm
side A outer diameter 15 mm
side A thickness 2 mm
side B length 10 mm
side B outer diameter 9 mm
side B thickness 2 mm
transition length 20 mm
axis offset 2.9 mm
ends fillet no fillet

Tube adapter STL file ⌀ 22–12 mm (Length: 70 mm) (📦 #4266)

1 object(s) - format STL
Tube adapter STL file ⌀ 22–12 mm (Length: 70 mm)
Tube junction ⌀22 mm to ⌀12 mm in STL 3D format. Length of this adapter is 70 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 ends are not rounded.
Parameter Value Unit
side A length 20 mm
side A outer diameter 22 mm
side A thickness 2 mm
side B length 40 mm
side B outer diameter 12 mm
side B thickness 2 mm
transition length 10 mm
axis offset 0 mm
ends fillet no fillet