Features: This steel mount and demount head comes with a mounting rubber pad and is compatible with various tire changer machines. It helps prevent wheel scratching and damage when clamping wheels from inside using internal clamps. Designed for repeated use, it offers stable performance and high durability. Suitable for use with mini cars, electric cars, motorcycles, go-karts, and similar vehicles. Compatible with wheel sizes typically ranging from 6 to 13 inches. Made from precision steel casting with smooth surfaces to reduce friction, ensuring easy operation. Specifications: Material: Steel Diameter: 28mm (1.1"), 29mm (1.14"), 30mm (1.18") Package Includes: 1 Set Tire Machine Duck Head Note: Please allow 1mm error due to manual measurement. The actual product color may vary slightly due to differences in monitor displays.