Tire Changer Air Valve Tire Changer Rotary Air Distribution Valve Tire Machine Air Valve Tire Grippi[feature] Tire change valves are used on many tire changers. The smooth surface reduces friction, making tire changes faster and more efficient. It prevents the wheel from scratching and damage when the wheel is clamped from the internal clamp. Made of high quality material, high strength and durable. [product information] Product name: rotary valve Colour: Black Material: engineering plastic Size: Refer to picture Packing list (available after purchasing one item): rotary valve*1 beg to be excused: 1. Due to the long shipping time, the item may be damaged during the transportation, if the item is damaged, please leave us a message through the official website immediately before leaving a comment, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Color may vary by monitor.