Features: brand new and high quality Structure: four-link locking. Specifications: No teeth, fold to the left (inward fold), leaning forward 9. Application: Suitable for 25.4mm handlebars, suitable for 28.6mm outer diameter front fork for head tubes. Size: The overall length of the riser is about 36-53cm, and the height is adjustable from 0-17cm. Tip: The hanging core can be purchased separately according to your own needs. You can use sunflower or other expansion hanging cores to fix the gold without the hanging core. The fixing method of the front fork of the mountain bike is the same. Specifications: Material:Aluminum Alloy Length:Approx.36cm/14.17(Shortest),53cm/20.87in(Longest) Net Weight:850g 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