Professional clamp for commercial or occasional use Screw type earth clamp Screw connection so allows a solid attachment to prevent from falling off when using 700 amps max current load through the clamp Operated by a screw driven jaw Rubber insulated handles which the cables connect through Cast clamp with bronze lower jaw for strength and durability The cable is connected with two big grub screws for maximum support Suitable for Mig, Tig and arc welding Provides a reliable connection when welding at a high current