Cheap And Discounts 1PC RS550 DC Motors 21500-29000RPM 9/11/12/14/15 Teeth 10.8V-25V for Electric Drill Screwdriver Electric Gear Motor High Torque Wholesale. Buy Directly From Merchant InstruGate Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.