Features: 2 standard for your option: 55/42mm. Adopts professional manufacturing process, with stable performance and good reliability. The tire repair buffer wheel is easy to operate and use, it can work with other air pneumatic tools. Made of superior tungsten alloy amterial, strong and wear-resistant, not easy to aging, to ensure maximum strength and durability. This tire patching buffer tool is suitable for most tire repair work and is a good tool to help you repair your vehicle tires. Specifications: Material: Tungsten steel Diameter: 55/42mm(optional) Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xTire Buffer Wheel