High Quality - Made of high quality cast steel, high strength and durable. The tire changer will be faster and more efficient on a smooth surface. Design - The shape of the insert is designed according to the shape of the duck head and the edge of the rim. It prevents the wheels from scratching and damaging. Excellent Protection - It protects the rims from damage. Usage - This tire changer with a diameter of 30 mm is used for many tire changer machines.