Feature 1Brand new mount demount duck head tool used for many tire changer machines 2The insert shape is designed according to the shape of the duck head and the edge of rim, easy to use 3With smooth surface to reduces friction, make the tire change more faster and efficient 4It prevents wheels from scratching and damaging when clamping wheels from inside clamps 5Made of high quality steel material, high strength and durableDescription: This is a steel tire changer mount demount duck head tool. With optimal tire change angle and smooth surface, it is a great tool for help you change tires fast and esily. There are 28mm & 30mm for your choice, directly replacement for the old one. Features: Brand new mount demount duck head tool used for many tire changer machines. The insert shape is designed according to the shape of the duck head and the edge of rim, easy to use. With smooth surface to reduces friction, make the tire change more faster and efficient. It prevents wheels from scratching and damaging when clamping wheels from inside clamps. Made of high quality steel material, high strength and durable. Specifications: Material: Steel +Electroplating(surface) Color: Silver Installing Hole Diameter: 28mm/1.1", 30mm/1.2" (optional) Overall Size: 190 x 100mm/7.5" x 4" Package Weight: 732-758g Package Included: 1 x Tire Changer Mount/Demount Head Notes: 1. Please check our photos with measurements to make sure it fits your machines. 2. It is easy to install, but professional installation is highly recommended. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }