ITEM NAME:Gearbox Transmission Gears with Motor Gear for Axial SCX10 RC Crawler Car Product Description Description: Hardened Steel Gearbox Transmission Gears with Motor Gear for 1/10 RC Crawler Car Axial SCX10 Gearbox RC Part Feature: All metal internal gears have strength. Equipped with 87T track gear and 20t pinion / 48 pitch, it is durable. The transmission ratio from engine to transmission is 11.31. Specification: Suitable for: 1 / 10 RC Crawler Axial SCX10 Material: Metal Motor gear diameter.: 45mm/1.77'' Drive gear diameter.: 30mm/1.18'' Size: 8 * 8 * 4cm/3.14*3.14*1.57'' Weight: 116g Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 X Steel Drive Gears Set.Suitable for: 1 / 10 RC Crawler Axial SCX10. Included: 1 X Steel Drive Gears Set. The transmission ratio from engine to transmission is 11.31. Weight: 116g. If item is defective after 3 months, you can still send it back to us.