Variable Speed Motor Pulley (both halves) for 16mm Shaft used in the following models: Delta 46-715 Delta 46-715 Type 1 Delta 46-715 Type 2 PLEASE NOTE: OUR PULLEY HAS A SLIGHTLY SMALLER O.D. YOU WILL LOSE APPROX. 10% OF HIGH END SPEED. *does not include the spring cap key or retaining ring