- Enhance your tire changing experience with these nylon head inserts, designed for compatibility with most common tire changer mount and demount heads, specifically the duck-head-shaped tools. - Made from durable nylon plastic, these inserts provide essential protection for your wheels, preventing scraping and gouging that can occur when metal heads come into contact with the wheel surface. - The tire changer mount demount head inserts fit snugly inside the steel mount head, ensuring that your wheels remain in pristine condition. Invest in these inserts and save money by avoiding damage to your wheels from the very first use. - Easily replace the original metal roller with these nylon inserts without the need for any modifications. Simply unbolt the steel roller and secure the nylon insert in its place, allowing for a hassle-free transition to a safer tire changing method. - Ideal for both professional mechanics and DIY enthusiasts, these inserts are perfect for use in tire shops, garages, or home workshops. Whether you are mounting new tires or removing old ones, these inserts simplify the process while safeguarding your wheels. - Compatible with a wide range of tire changers, these nylon inserts are a practical addition to your tire changing toolkit, ensuring optimal performance and protection for all your tire servicing needs.