These are built like a tank. They have good length and are very secure. A pin is included with each of these to help secure them to the uprights. They could have lined them with UHMW where they contact the uprights. Very good piece though.
These collars are very tight. They fit my bars and hold everything in place. They also look sharp. I like being able to just keep them on my rack via the magnets. My favorite set of collars for sure
Nice collars for the price, they work really well my. I figure they may not hold with repeated drops, but they are great at holding weights on a machine.
Just a nice strong loading pin. I was using it with my Bullet pulleys. Also I have used it with my Massenomics Horsestall mat gripper and my glove grip.