Bike Bicycle Fork Stem Extension Stem Extender Handlebar Riser Extension Adapter Mtb Mountain Road Folding Bikes Accessories Features: *1. Made of high-quality aluminum alloy, with high strength, practical and durable.? *2. The hidden handlebar extender can increase the handlebar height by about 3 cm.? *3. Lightweight design, reduce cycling burden.? *4. The installation handle of the front fork standpipe is 28.6 mm, which is suitable for steel standpipe, aluminum alloy standpipe and carbon fiber front fork standpipe on the market. Description:? *1. Material: aluminum alloy *2. Color: as shown *3. Size: 81*28.6*23mm (Note: this size can be expanded and changed, and the inner diameter of the front fork standpipe must be greater than 23mm can be used! ) *4. Weight: about 90g *5. Applicable: national standard 28.6 standpipe front fork can be used Package Content: Hidden fork booster *1 Note: *1. All pictures are professionally color-coded, but due to the difference of ambient light and display equipment settings, there may be some deviations between the pictures you see and the objects themselves. Please understand. *2. The data is measured manually, and there may be some deviations, but it does not affect the use.