This is an optional XRAY Composite 48P 3-Pad Slipper Clutch Spur Gear (75T).
Optional spur gear for 3-Pad Slipper Clutch. Precision-molded slipper clutch spur gear 75T 48P is made from XRAY's exclusive secret blend of composite material, allowing the gear to be robust enough to handle high-performance brushless motors. The spur gear is designed to have the lowest possible weight while staying strong and light. Each gear has a stamped tooth number for easy identification.