K body Revo parallel clamps have 1500 lbs clamping pressure, galvanized steel rail and non-marring, glue resistant super polymid jaws, Easily convert to a spreader without any tools, Patented locking system with dual set screws, 30% larger parallel clamping surface than previous K-Body, Non-marring glue resistant super polyamid jaws, Replaceable protection pads for delicate surfaces, Rail protection pieces to elevate work piece above the rail, Ergonomic handle made with a high quality 2 component composite for comfort, Galvanized steel rail to prevent rust, Oversized acme threads for faster clamping, Easily convert to spreader without tools, Jaws clamp at accurate 90 degree angles, Bar Material: Galvanized Steel, Throat Depth: 3-3/4"", Clamping Capacity: 50"", SKU: HDSRBR3016