With a jaw opening of 4-inches and a throat depth of 2-1/8-inches, the TEKTON 4-Inch Heavy-Duty C-Clamp can take on woodworking, fabrication, and automotive projects. It features a heavy-duty, malleable steel frame with a durable, baked enamel finish. The chrome plated steel screw has a swivel pad that adjusts to work piece. Tighten or loosen the clamp using the sliding T-bar handle. And don’t worry, it’s backed by the TEKTON lifetime replacement guarantee. So, go ahead, Take It On.