Feature: 1. Premium Material: Made of high quality steel material, has excellent performance, is durable to use and has a long service life. 2. Easy to Install: With fixing screw holes, easy installation and simple operation, with M4 set screws and wrench, hole diameter is 5mm/0.2in. 3. Anti Rust Surface: The gear surface is hard anodized, and the surface is treated with anti rust, which has long lasting performance. 4. Withstand Great Force: 15T pinion motor gear can withstand greater force and make your remote control car perform better. 5. Applicable Model: Suitable for ARRMA Granite, for Big Rock, for Typhoon, for Senton 3S brushless brush series 1/10 RC car, suitable for 5mm shaft diameter motors. 6. Good Performance: With fine workmanship, can give full play to the best performance, improve the power of the remote control car. Specification: Item Type: 15T Pinion Motor Gears Material: Steel Color: Black Weight: Approx. 12g / 0.4oz Number of Teeth: 15T Hole Diameter: Approx. 5mm / 0.2in Modulus: 0.8MOD Radial Spacing: 32P Product Height: Approx. 13mm / 0.5in Product Diameter: Approx. 13mm / 0.5in Application: Suitable for ARRMA Granite, for Big Rock, for Typhoon, for Senton 3S Brushless Brush Series 1/10 Remote Control Car, Suitable for 5mm Shaft Diameter Motors. Package List: 1 x 15T Motor Gear1 x Set Screws1 x Wrench Note: 1. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.