The electromagnetic mobile clutch assembly from General Pump features a 9 3/4-inch, two-groove pulley that receives both “A” (4L) and “B” (5L) belts. A one-piece, solid-forged rotor eliminates the chance of parts separation and maximizes torque. The pulley is made from zinc-coated steel. 888/474-5487; www.generalpump.com.