28mm Nozzle Fits Derek Weaver W-M807 Tire Changer. Even with nylon protectors on my OEM M807 head, I was always worried about scratching the wheel. With this head there is now no chance of any metal parts touching the wheel. It was perfect for my tire changer. Installs in minutes. I love it so much I bought a second one for my shelf in case the current one cracks or breaks in the future.