I was hesitant to purchase these magnetic welding clamps for my automotive workshop, but I'm glad I did .As a result of using this product i found that they are incredibly DURABLE and provide a strong grip, making my welding tasks much easier. The magnets are also powerful and kick into action quickly. The only downside is that they can be a bit heavy to maneuver at times. Overall, I'm very satisfied with my purchase and would recommend them to anyone in need of a reliable set of welding clamps..