The collars were a little snug for the Olympic bars unless you really squeeze hard. Was difficult for the a number of members. We hope they will loosen up with use.

I have found these to be very decent Olympic spring collars at a good price. They are made of good quality steel with nice heavy chrome plating. These are the offset type that I prefer and are also a little shorter than my other spring collars, so will work nicely on my curl bar. They were initially a little loose on the ends of my bar, so I reduced their inside diameter by compressing them very tightly through forcing the spring handles backwards several times as far as possible and they now fit very securely on the bar ends. Overall, I'm happy with these spring collars and will definitely buy another set when needed.