... clamp cold welding machine: 1.Easy to operate, light weight 2.no heat, no electricity 3.welding just one ... Main configuration: 1. Application: Widely used in cold welding for the wire of copper, aluminum, nickel, Platinum, ... 4. Advantage: No power, no change of the resistance, clean, light, thin deposit, easy of operation, portability ... 50mm* 60mm(L*W*H) 6. Frame-type: Precise die-casting 7. Weight 0.7kg