Nickel-plated steel for corrosion resistance. Adjustable opening and quick-release lever. Includes: 240mm sheet metal clamp, 280mm welding clamp and 275mm C-clamp pliers. Nickel-plated steel for corrosion resistance. Adjustable opening and quick-release lever. Includes: 240mm sheet metal clamp, 280mm welding clamp and 275mm C-clamp pliers.