Manufactured from strong, ductile cast iron and shaped to provide a high-strength grip on metal pipes, bars and tubing, the Triton Engineers Jaws are compatible with SuperJaws SJA100E and SJA100P. The bolt-on jaws and anvil face are specially designed to accommodate and withstand heavy duty metal work and the 50mm (2'') capacity firmly holds metal work pieces of approximately the same diameter making them highly versatile and indispensable for metal working applications.