HEAVY-DUTY CONSTRUCTION- Made of ductile iron which increases the durability and longevity, this table vise is designed to be used in a tough environment. SUFFICIENT CLAMPING CAPACITY- The built-in jaws are grooved for enhanced grip and allow for easy clamping of pipe and other rounded material. It is designed to withstand the clamping force(Kn30). 360 DEGREES ROTATION- The head of the vise can be rotated by 360 degrees for extra versatility, and the swivel base of the vise allows for optimal work placement and flexibility.