Stainless construction eliminates corrosion. 3” (80mm) ID fits all valves with a standard 2" x 2" (50 x 50mm) operating nut. Torque tested to 1000 ft. lb. . Strength of stainless steel delivers rugged, durable performance. Patented design adjusts automatically to damaged nuts. Simple, quick operation saves money and crew time. Secure grip prevents operator injuries. On-demand turning prevents additional valve shut-offs.