High-strength split one-piece machined 2-gear 14/19T pinion gear module from tough 7075 T6 aluminum and particularly hard coated for superior strength, light-weight, and high durability. Created on a particular gear machine, all pinions function ultra-precise tooth shaping and ultra-true operating for vibration-free procedure. Fine interior threading enables effortless installation. Each pinion is okay etched with the tooth number for quick & effortless recognition.