Features: 1.Brand new mount demount duck head tool used for many tire changer machines 2.The insert shape is designed according to the shape of the duck head and the edge of rim, easy to use 3.With smooth surface to reduces friction, make the tire change more faster and efficient 4.It prevents wheels from scratching and damaging when clamping wheels from inside clamps 5.Made of high quality steel material, high strength and durable Specification: Description:_x000D_ 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._x000D_ _x000D_ Features:_x000D_ _x000D_ Brand new mount demount duck head tool used for many tire changer machines. _x000D_ The insert shape is designed according to the shape of the duck head and the edge of rim, easy to use. _x000D_ With smooth surface to reduces friction, make the tire change more faster and efficient. _x000D_ It prevents wheels from scratching and damaging when clamping wheels from inside clamps. _x000D_ Made of high quality steel material, high strength and durable. _x000D_ _x000D_ Specifications:_x000D_ Material: Steel + Electroplating(surface)_x000D_ Color: Silver_x000D_ Installing Hole Diameter: 28mm/1.1", 30mm/1.2" (optional)_x000D_ Overall Size: 190 x 100mm/7.5" x 4"_x000D_ Package Weight: 732-758g_x000D_ _x000D_ Package Included:_x000D_ 1 x Tire Changer Mount/Demount Head_x000D_ _x000D_ Notes:_x000D_ 1. Please check our photos with measurements to make sure it fits your machines._x000D_ 2. It is easy to install, but professional installation is highly recommended. PackageList: