Novak 5160 Steel Pinion Gear (3-Pack), 5mm, 32P, 12T/13T/14T FEATURES: Designed to mesh with the Novak HV series of brushless motors (#3524-3527) and other brushless motors with a 5mm output shaft These shafts w INCLUDES: One each 12 tooth, 13 tooth and 14 tooth pinion gears and three 4x4mm set screws REQUIRES: Installing on motor shaft and tightening set screw jxs 1/20/09 ir/jxs