POWERTEC 20310 Latch-Action Toggle Clamp, 400 lbs Capacity Number, 323 Ideal for use on doors, machinery, automobiles, jig assemblies and other medium to heavy-duty job applications Cold-rolled carbon Steel with Zinc plated coating for corrosion resistance Streamlined latch-mechanism features strength and adjustability 400 lb holding capacity; Complete with adjustable u bolt Mechanism allows maximum clearance