INTERMEDIATE FIBER GEAR. FOR 90 OR 91 RPM SPILT PHASE 1/2 HP RETSEL GEAR MOTOR. NOTE THAT SOME STEEL GEARS ARE HELICAL AND OTHERS ARE SPUR GEARS. PLEASE SEND IN THE BROKEN GEAR BACK TO US FOR IDENTICAL MATCH. THESE GEARS ARE A PROPRIETARY ITEM AND ARE MADE EXCLUSIVELY IN OUR FACTORY AND FIT RETSEL MILLS ONLY. DELIVERY TIME IS 2-8 WEEKS FROM THE TIME YOU PLACE YOUR ORDER. A FREE REPLACEMENT WARRANTY ON THIS ITEM IS 3 YEARS IF INSTALLED IN OUR FACTORY.