This C.H. Hanson clamp is built to last a lifetime. It is made from high-grade alloy steel for maximum toughness & durability. This clamp has a nickel-plated finish, which resists rust & corrosion. The clamp features a traditional release lever, which allows the clamp to be released even at a high pressure. The traditional adjustment screw allows the clamp to fit to various sizes & pressures. This 225mm (9 inch) Locking Sheet Welding clamp has U-shaped jaws for visibilty & work access. It holds work in proper alignment & is ideal for welding. Meets all ASME product specifications.