Lamoutor 2Pcs Anti-Slip Hex Nut Collar Screw for Barbell Dumbbell Weight Lifting

Excellent fit. No issues with the quality at all. I'm sure some people got unlucky, but it looks like some others ordered the wrong size on accident. Just double-check the diameter of your bar and make sure you selected the right size before checking out.

I was considering being cheap and getting rubber/plastic ones instead, but I’m so glad I opted for the metal! I have plastic ones that came with a dumbbell set which fits my ez curl bar ok, but they take forever to put on and off which makes changing weights tedious and annoying. These metal ones thread perfectly and spin on and off super quickly and easily! Worth the few extra bucks, and I’m sure they’ll last longer.

Honestly I never really write reviews on Amazon if I ever have an issue I just return the item but after not one but two whole sets that I ordered for my curl bar all four do not thread! This has been one of the worst purchases that I've bought on Amazon in a very very long time Do yourself a favor if you need to buy these things just pay that little extra money and go to an actual store because these are garbage.

Fits 1.15 inch holes. Make sure to pick the right height for your handles

the item fit perfectly to my weight set. I had lost the bolts and these have me back in the game of getting some muscles..

They were fine. Except that I didn't realize that my dumbbell handles were 1.15" instead of 1". All of my dumbbell plates are cast iron, which have holes for 1.15" handles. Didn't know that. Tried screwing them on and was going "what the hell?" People who make plates and handles don't emphasize this difference enough. Had to send them back.

Good replacement when you can't remember where you placed yours. Made of metal and sturdy

Had to shave off 2 stars because 1 of these hex nuts screwed on easily and the other doesn’t fit - have to return & try another set