The steel ground clamps feature all steel bodies and are ideal for farm welding or light shop work. These particular clamps work on all shapes and sizes of metal. Amps 500. Your one source for exceptional quality and service. At K-T Industries we strive to make things simple and easy for our customers. We are dedicated to delivering high quality products at competitive costs. We strive for Mutual sales growth and two-way communication with our customers. Service always comes first. Lifetime warranty - tools: socket sets, sockets and accessories, adjustable wrenches and combination wrenches. 90 day warranty - tools: hex bit sockets, screwdrivers and screwdriver tips, impact drivers, pliers, torque wrenches, hammers, threading and cutting tools, crimping tools, pipe wrenches, gear pullers, porta pullers and clip holders. K-T Industries will repair or replace, without charge, any k-t tool which may fail to function properly within the warranty period by reason of defective workmanship or material. This warranty does not apply to defects due, directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities or a lack of maintenance.