High-Quality Aluminum Hard Anodized Pinion Gear Set - 4 Pack, 64P, 51-54T for RC Cars, Drones & Robotics - Durable Replacement Parts for High-Speed Performance

The Avid 64 pitch pinion is made out of 7075-T6 aluminum, hard-anodized to reduce wear and friction, and in a pack of 4 (51,52,53,54). We have laser etched all the details onto the pinion for easy notification. It is the common 1/8" bore (3.17mm) and includes one set screw.