Item Weight:700 g Description: This is a stainless 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. Specifications: Material: Stainless Steel 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. Brand new mount demount duck head tool used for many tire changer machines Made of high quality stainless steel material, high strength and durable 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 The insert shape is designed according to the shape of the duck head and the edge of rim, easy to use See more product details Brand new mount demount duck head tool used for many tire changer machines Made of high quality stainless steel material, high strength and durable 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 The insert shape is designed according to the shape of the duck head and the edge of rim, easy to use