Coffee Mug Holder

Basically, it is a hook for detachable coffee mugs for baby strollers. As original hook/holder was made from elastic band which did not last long I had to build another one from the scratch. You will need some nuts and bolts to assemble the parts together.
Bolt M4x35
Nut M4
Bolt M3x35
Nut M3
(When I printed the hook part for the first time, I did not set the infill value properly and the part broke, now it is ok - infill value is more than 70%. The hook part should be printed in such way t