From the Loftsmith community

1:28 RC drive cup coupling

Connects a drive shaft to a wheel or axle on a 1:28 RC car, with a cup that grabs a ball-ended pin. The cup has two slots on either side so the cross-pin drops in and turns the shaft with it. Change the cup length and the ball socket size to match your own drivetrain.

1 part · 1 g · 10 × 10 × 27 mm

Short round cup with two side slots sitting on a cone, above a narrow shaft
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No adjustable sizes

Ask for the sizes you want to tweak, e.g. “make the width adjustable”.

Change it in the Studio
I printed this Remix

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