Perfect Parallel jaw design for, 90 degree clamping of materials, glue-ups of materials, general purpose clamping of wood, composites, plastics, light metals, and mixed materials, can be attahced to work surfaces using TK-6 clamps * 3 3/4" throat depth, with 3 removeable jaws pads designed to protect material surfaces, two rail protector pads designed to keep clamped material from contacting rail surfaces. Rail protector pads snap off when not needed. * 1,500 lb clamping force, with ergonomic designed 2 component molded soft grip handle * rapid action jaw opeing and closing, simple raise handle away from steel rail and slide moveable jaw to desired point, reverse movabel jaw for spreading * cold drawn steel alloy rail with six serrated edges for secure,slip pro0f clamping, K Body REVO clamps sit flusch on work surface for easy set ups