100% brand new and durable Made of high quality material. High Wear-resistant High Crush-resistant Fit RC 1/10 12mm Hex Crawler Car Material: Aluminium Outer Diameter: 56mm/2.20in inner Diameter: 40mm/1.57in Width: 25mm/0.98in Drive Hex: 12mm/0.87 inch Hole Diameter: 4mm/0.16in Weight: 68g/pcs Content: 4 pcs Note:The size may have 1-2mm differs due to manual measurement.