Feature: 1. High Strength: Aluminum alloy material, fine workmanship, high hardness, not easy to deform. 2. Compact Design: Shape is small, light and portable, does not take up space, and can be placed anywhere. 3. Antislip Surface: The surface of the sleeve is sandblasted and antislip. After molding, the surface is polished. 4. Sandblasting Treatment: Even if the hands are sweaty, the installation will not slip, and the surface also presents a delicate metal texture. 5. High Accuracy: Processing and forming, more precise core punching, no deviation in the center, automatic depth positioning. Specification: Item Type: Bicycle Fork Headset Install Tool Color: Blue Material: Aluminum Alloy Weight: Approx.110g/3.9oz Applicable: for Front Fork with 28.6mm/1.1in Outer Diameter Steel Head Tube, Carbon Fiber Head Tube is Forbidden. Package List: 1 x Percussion Lever1 x Headset Core2 x Positioning Screw1 x Round Tube Note: 1. It is suitable for the front fork of the steel head tube with an outer diameter of 28.6mm, and the carbon fiber head tube is prohibited.2. Please use it with a rubber hammer or an iron hammer. Some steel headset are harder. Please use an iron hammer to strike.3. When hammering the percussion rod, do not hold the auxiliary sleeve.