Industrial-duty clutch mated to high-performance Cat Pump increases durability and dependability. Convenient remote control of on-off function optimizes system performance. Superior strength forged rotor, hub and armature offer superior flux and maximum torque for long life. Double groove 7 pulley, A type belt and 16.5mm shaft. Fits Cat Pumps models 280, 290, 333 and 430 piston pumps and 230, 240 and 270 plunger pumps.