Features: Made of premium aluminum alloy, lightweight and strong, not easy to rust. Surrounded by 360° ratchets, the bite is firmer and does not damage the front fork. Waterproof and dustproof, prolong the service time of bicycle forks. 23.5-25.8mm extended diameter, suitable for 28.6mm front fork. Easy to install with a 6mm Allen wrench, and it can be reused. Specifications: Color: Black/ Red/ Blue/ Gold(optional) Material: Aluminum Alloy Item Weight: 31g/ 1.1oz Package Size: 50 * 50 * 35mm/ 2.0 * 2.0 * 1.4in Package Weight: 40g/ 1.4oz Packing List: 1 * Bicycle Expander Plug 1 * Top Cap 1 * Screw