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. The shape of this 150mm (6 inch) Locking C Clamp allows reaching into places where ordinary clamps cannot be used. The swivel pads provide a greater surface area of contact to hold material in place. The pads are fitted to prevent damage to soft materials & are designed to hold irregular or tapered work. Meets all ASME product specifications.