Features: Designed in line-with the bird's-for head shape and-edge, easy to use. Smooth-surface reduces friction, convenient to use. The insert protects the tire for rim-from being scratched when changing the tire. This head is suitable for swing arm tire changer, it has deep-groove and can cover completely the rim-edge. Its-made of high-strength nylon which is durable enough to withstand the bead stress of run-flat and low profile tires. Its-suggested to use plastic-heads in tire changing because it is much safer for delicate and expensive wheels and prevent any damage to tire and-rim. Specifications: Material: Nylon+Metal Size:As Picture Shown Color: Black Package Includes: 1x Automobile Tire Changer note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.