Hands-free operation. Welded alloy steel construction for strength and smaller size. Comes equipped with polyurethane pads. (Replacement kits are available.) Individually Proof Tested to 2 times the Working Load Limit with certification. Crosby IP logo, Working Load Limit and jaw opening permanently stamped on body. Each product is individually serialized, with the serial number and Proof Load test date stamped on body. User manual with test certificate is included with each clamp.