Features 1、Applicable Model: This motor pinion gear set is suitable for 1/8 RC model car 5mm shaft brushless brushed motor, please confirm the model of the RC car before use. 2、Premium and Durable: Made of premium hardened steel material, which has strong wear resistance, corrosion resistance, good performance and long service life. 3、Rust Proof: The surface of the gear is treated with anti rust, so it will not rust after long term use, it is an ideal replacement for old or damaged originals. 4、Precise Processing: Precise machining, good machining makes the gear roll smoothly, with its own fixing screw holes, easy installation and simple operation, the package is equipped with machine screws. 5、Different Teeth Number Pinions: Four pinion gears with different numbers of teeth are provided, giving you more choices in gear ratios and making your RC car perform better. Item Type: RC Motor Pinion Gear Material: Steel Gross Weight: 67g / 2.4oz Color: Black Type: RC Accessories Gear T Number: 19T, 20T, 21T, 22T Pitch: M1 Hole Shaft Diameter: Approx.5mm / 0.2in 19T Size: Approx.20 x 14mm / 0.79 x 0.6in 20T Size: Approx.22 x 14mm / 0.87 x 0.6in 21T Size: Approx.23 x 14mm / 0.91 x 0.6in 22T Size: Approx.24 x 14mm / 0.94 x 0.6n Suitable: for 1/8 model car 5mm shaft brushless brush motor Package List 4 x Motor Gear 4 x Machine Screw 1 x Wrench