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. It’s-made of high-strength nylon which is durable enough to withstand the bead stress of run-flat and low profile tires. It’s-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: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.