Item No NVK-5161 Description This is Novak's 5mm 32-Pitch Steel Pinion Gear 3-Pack (15T/16T/17T) (#5161). These nickel-plated gears are available in packs of three gears, allowing drivers to experiment with gear ratios. In addition to the added flexibility, the three-gear packs save money by giving drivers the ablility to purchase a pack of gears, instead of buying individually. These precision-made gears mesh with HV-Series of Brushless Motors (#3524 - #3527) and other brushless motors with a 5mm output shaft. This durable motor and pinion gear combination can be used to power Monster trucks, including the Traxxas® E-Maxx™, HPI® E-Savage™ and Kyosho® Twin Force™. The 32-pitch gears are nickel plated to resist corrosion and are designed with ultra-precise concentricity to prevent wobbling. In addition, the gear size is stamped for easy identification and a 4mm x 4mm set screw is included with each gear.