No notes. They are a walking ad and testament to strength and durability. Smooth, yet easy to grip. Excellent central hole with minimal deviance that allows for a very snug fit without a lot of give.
The pit shark is an awesome belt squat, easy to move weight on it with good ROM that doesn't feel halted or tight at the bottom like some. The safety/stoppers are also easily adjusted.
Great option for dumbbells and would be top of my list if I were in the market. These have a great knurling and don't roll everywhere, but the corners also are sharp enough to cause issue when transferring from your thigh or other areas.
Built like a tank and will not budge under heavy weight. Still has a large amount of versatility and add ons. Prove would probably be one of the few limiting factors.
This plate is about as quality as a square wheel. Fine if you only use machines, or if you love deadlifting on odd shapes, otherwise spend your money elsewhere.