These collars, while they do grip the ends of the weight bar, take a LOT of force to open up and some of the chrome on the inside of them flaked off when I put them on my CAP Barbell Olympic weight bar. They work, but the product is relatively low in quality. I'm not going to return them because they work. But I will probably buy something easier to get on and off the bar without my having to use both hands and which, hopefully, won't leave flakes of chrome on the floor when I attach them to the bar.<br /><br />I don't know if the chrome flakes are from between the loops of steel or if it is from the inner surface of the loops. I haven't taken them off to examine them (pointless, since they work). I really expected better quality from CAP Barbell on these.<br /><br />It would have been better to have them made of stainless steel than to have chrome plating on them. Especially since the chrome plating doesn't seem to be well attached to the steel.
Rating: [3 of 5 Stars!]