The Model 460-12 TRISTAND® features an integrated chain vise for securely holding pipe 1/8" (3.175 mm) to 12-inches (304.8 mm) in diameter. Designed for stability and durability, the unit’s base gives you a generously sized work area, while three tool hangers and tray keep threaders and other necessities close-at-hand. Built-in clamp allows welders to ground their equipment.