MaterialHigh speed gear set made from high quality materials and designed for long lasting performance. Strong metal alloy for maximum performance.Replacement PartsRC car accessories, and more to get the most out of your models. Increase overall performance and durability of your RC car.Precision MachinedWith precise machining and engineering, the High Speed Metal Gear Set guarantees smooth and efficient gear transitions.FeatureHigh speed gear set, CNC precise processing ensures long lifetime and better work performance.Easy to UseEasy and convenient to install and use. High speed gear set is for TT02 1/10 use on RC and model products.Specification:Material: Aluminum AlloySize Chart:Gear: 68TBlue Aluminum Kit Outer Diameter:2.3cm/0.91inch ,Inner Diameter:5mm/0.20inchPackage Includes:Optional Package:1 68T Gear Aluminum KitOr1 Single Aluminum KitNote:Please allow slightly errors due to manual measurement and different monitors.