Schmidt Kupplung Control Flex CPS 15.1 Coupling Insert

We use a lot of Schmidt Kupplung Control Flex couplings at work, and I designed this mainly as an exercise in 3D modeling. It prints fine and fits into the metal halves of the couplings fine, but I've never used one in production as the line these go on is a multi-million pound corrugator, and if it caused problems I'd have big questions to answer...

Still, it's here if anyone wants to try it out. These are sized for CPS 15.1 Control Flex couplings.