Quick Release Barbell Collar / Barbell Clip for 2" bar

Quick release Barbell Collar/Clamp for a 2" bar. 

Current design requires 4x #6 1" construction screws.

Print 1x: 

cylinder.stl, clamp.stl

Print 2x:

part-1.stl, part-2.stl, tpu.stl (I printed in TPU but you can print in PLA) 

The clamp is a print-in-place hinge.