Purchased several sets for my extensive clamp collection, and have been very satisified. These pads are tough, and will not stick to the work. At the same time, they eliminate slippage and twisting as the clamp is being tightened. In addition, they fit the less costly Pittsburg brand pipe clamps like a glove. I have found that these clamps are every bit as good as the Jorgensen clamp for about 1/3 the price! These pads make them even better.