I have four pairs of these collars and use them for all of my strongman implements. I purchased my first pair of these in 2021 and have been using them multiple times a week without any issues. I use a piece of 1/2" pipe on the T-handles to tighten the bolts, and the bolt and nut don't show any signs of play or wear.

I've had these since 2023, and like everything else that Gorilla Strength makes, these are well-built and priced very reasonably. The placement of the sleeve washers is balanced and consistent, and they've survived multiple drops. They're a fun tool to use if you want to switch things up with your DB accessory work or work on your grip. My only critique is that the finish is very smooth, so extra chalk is usually required.