I ordered two of these clamps and received them today. They are heavy and look like a steal. I took a clamp and hand tightened a piece of wood just to try it out. Result: The thread is stripped off and does not pull. Needless to say I am returning them immediately! This seems to be an issue with some items I've ordered through Revain. The photos and description look good and I read the reviews. Maybe that particular clip was bad, but the quality control sucks. If one was bad, why risk the other? Save your money and go for the best quality. I think it was probably made in China. I'd rather pay more and get something more durable. UNSATISFIED!