Features: 1Durable Material: Made of premium plastic and steel materials, it has strong wear resistance, corrosion resistance, good performance and long service life. 2With Machine Screws: Good processing makes the gear roll smoothly, with its own fixing screw holes, easy installation, simple operation, and machine screws are provided in the package. 3Improve Performance: Small in size and light in weight, it can give full play to the best performance, improve the power and overall performance of the remote control car, and work closely together. 4Applicable Models: The gears set has the ability to withstand high forces, giving your RC car a good drive performance. Fit for Axial SCX10 SCX10 II 90046 1/10 retrofit. 52 Pinion Gears: Provides two pinion gears with different numbers of teeth, allowing you to have more choices in the gear box ratio and making your RC car perform better. Package included: 1 x Gear Box 56T Large Gear 1 x 13T Motor Gear 1 x 15T Motor Gear 2 x Spacers 2 x Accessories 4 x Machine Screw