The clamps are useful. The clamps go so well. However, the two gun clamps are abosluter scrap. I build airplanes out of balsa wood. It often parts must be held together, who knows balsa wood, you know that there can not ran by force. However, in a gun vise at 1. Use the handle is broken! Thus, I can not recommend the product. Rather spend a few euros more and buy something clever.