TAPERED SPINDLE 1/2" HOLE RIGHT SIDE OF MOTOR POLISHING BUFFING WHEEL HOLDER (E 4) TAPERED SPINDLE FOR 1/2" ARBOR SHAFT USE ON 1/2" SHAFT MOTOR - WITH 1/2" DIAMETER HOLE- RIGHT HAND THREAD - 4-5/16" LONG- Tapered Threaded Spindle is Made in the U.S.A. manufactured with close tolerances, runs true without any vibration with optimal performance of wheels and accessories being used. This Arbor - Spindle is used to hold Wheels with 1/8" Pin Hole Centers: Polishing Buffs and Felt Wheels, Satin Finsh wheels, Wood Hub Brushes... Spindle has a 1/2" arbor hole to work on 1/2" shaft Grinders, Motors or Polishers. The arbor is made and threaded to be used on the RIGHT Side of the motor. Spindle has a pair of Allen Head Set Screws to attach to your motor shaft. Note: Always slightly tighten the front most set screw and then the one closest to the motor. Final tightness should be done after both are equally tight. JETS Product # 1603-192414 FEATURES:  Precision Quality  Machining is done by CNC Equipment  Made of Steel and Anodized Finish  Allen Set Screws do not protrude above the main shaft of the spindle.