Aluminum alloy material, high strength aluminum alloy material, exquisite workmanship, strong, safe and durable, with polished anodized finish.Adjustable height, 4 joints with different matching methods, adjustable height, four metal joint adjusters: 3 x 2/5 inch adjusters and 1 x 1/5 inch adjuster, more flexible for you to raise the fork stem. Maximum height extension: 2.7 inches (70 mm)Machined alloy top cap for easy installation, just connect the forged and heat treated front fork stem for strength, double screw locking design fixed more firmly, not easy to fall off.Lightweight aluminum alloy reduces the burden of cycling, compatible for most bikes, suitable for bikes with 1 1/8 inch threadless headset, can freely adjust the gasket to your own height.Surface frosting process, using frosting process treatment, surface texture is more prominent. Used to raise the stem and handlebar, make your back more comfortable while riding, bring you a pleasant and relaxed cycling experience without bending the body too low.How to install:1. Insert the rod pusher into the fork lever and position the metal regulator as desired2. Assemble the stem pusher base and wheel stem and tighten the retaining bolts.Color: blackMaterial: Aluminum alloySize: 138mmPackage Contents:1x Bicycle stem1x keyOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.