I designed new handles for my daughter's bike because they were worn out. She is very happy.
Inner diameter is 21 mm. Length 80mm.
I hope it is useful to someone else.
Printed at 0,2mm layer height, 15% infill with Fiberlogy FiberFlex 30D (TPU) from https://www.3dfilamentshop.nl
The author marked this model as their own original creation.