Professional design: The shape of the insert is designed according to the shape of the duck head and the edge of the rim, which is easy to use. Function: This is a stainless steel tire changer with a diameter of 30mm to the duck head. , Used in many tire changers. When the wheel is clamped from the internal clamp, it can prevent the wheel from sc ching and damage. Smooth surface: With the best tire changing angle and smooth surface, the smooth surface can reduce friction and make tire replacement faster and more efficient. It is an excellent tool to help you change tires quickly and easily. High quality: made of high quality stainless steel material, high strength and durable. It has good wear resistance, resistance and aging resistance, and has a long filling time. Quality Assurance: As a professional seller, we offer high quality products and thoughtful services. Each product must be strictly inspected to ensure reliable quality. Please rest assured to buy our products, I hope you have a pleasant shopping experience. Specifications: Condition: 100% brand new Material: stainless steel Color: silver + yellow Installing Hole Diameter: 30mm / 1.2in Overall Size: 17.7 * 8.5cm / 6.9 * 3.3in Package Weight: 751g Package List: 1 * Tire Changer Mount/Demount Tool Notes: 1. Please kindly check the dimension and pictures to make sure perfectly fit your machine. 2. It is easy to install, but professional installation is always recommended.