Specification: Item Type: Compression Plug Material: Aluminum Alloy Body, Carbon Steel Lock Core Product Size: Expansion Body Length Approx. 40mm/1.6in Expansion Range: Approx. 22.2-25.4mm/0.9-1.0in Applicable Front Forks: 25.4mm1.0in and 28.6mm/1.1in Outer Diameter Carbon Fiber Forks and Mountain Suspension Forks How to Use: 1. Put the expansion core into the upper tube of the front fork 2. Tighten the pull rod clockwise with a 6mm/0.2in inner Hex wrench to lock the lifting core 3. Install the stem on the front fork pipe diameter, the edge of the lifting core is lower than the edge of the stem. Remember to leave the distance of the headset cover for the stem installation. 4. Tighten the screw clockwise with a 5mm/0.2in inner Hex wrench to tighten the headset cover Package List: 1 x Compression Plug 1 x Screw 1 x Headset Cover