Hobbypower 7075 Metal 48P Spur Gear 85T for Sakura D3 Cs S Xi XIS 1/10 Drift Racing Car this is a Metal 48P Spur Gear 85T, use to upgrade for SAKURA on-road car Suitable for most 1:10 on-road belt drive car, also can use on some shaft drive car please attention, because of the motor gear and this spur gear are metal, suggest to add lubricating oil, not only to reduce the friction between the metal gear, but also the sound will be a little bit small.