Features:100% brand new and high quality.Easy to install and durable in use.Light weight and portable to carry.High Wear-resistantHigh Crush-resistantMake your RC car more cool and attractiveSpecifications:Material: MetalShaft diameter: 5mm/0.2inOptional Color: Blue/Silver/Red/BlackNotes: When using this wheel rim hex, please note that it will be to 5mm wider if you put it on the original wheel hex. Before buying, you should pay attention to whether your axle is long enough.Package include:4 * Aluminum 12MM to 17MM Wheel Hex Adapter8 * Spacer