Upgrade your HPI car or truck with the HPI Racing Drive Gear Set for Wheely King. This set includes all the gears you need to keep your vehicle running smoothly, and is compatible with electric, nitro, and glow fuel types. The black gears are made of high-quality materials, ensuring durability and longevity. Suitable for ages 8 and up, this drive gear set is compatible with 1:6, 1:8, and 1:10 scales, and was manufactured in Taiwan. It is a must-have for any serious RC vehicle enthusiast. Don't settle for anything less than the best - choose HPI Racing for all your RC needs.