Comet 202312A Centrifugal Clutch for V Belt. Heavy Duty Self Contained Single Pulley. Specifications: 1" Bore, 1/4" Keyway. 3-1/2" Overall Diameter, 3" Diameter Pulley attached. Uses A or B Section V belts. Bi-directional functionality (inboard or outboard mount). Genuine Comet Industries Part NP35AB-10 CLUTCH S350.