Features: brand new and high quality High-quality aluminum alloy material, strong and durable, not easy to deform. Application: The default 31.8mm handlebar, and the 25.4mm handlebar can be used after adding the handlebar reducer. Suitable for front fork for head tube with 28.6mm outer diameter. Size: The overall length of the riser is about 33-47cm, the height of 0-14cm can be adjusted, and the distance of each adjustment is 2cm. The hanging core can be purchased separately according to your own needs. It can be fixed with sunflower or other expansion hanging cores without the hanging core, which is the same as the fixing method of the front fork of the mountain bike. Easy Install and a necessary components part for folding bike repair. Specifications: Material:Aluminum Alloy Length:Approx.33cm/12.99(Shortest),47cm/18.50in(Longest) Net Weight:912g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Folding Bike Handlebar Stem