This product has five specifications, which is convenient for you to adjust the handlebar to the height and angle suitable for you, and it is more comfortable to ride. Features: Aluminum alloy material is solid and practical. The frosted surface is comfortable and smooth without hurting hands. Can be adjusted by 60°(plus and minus) to release the waist pressure. There is a height suitable for you. Double screw design, high stability, not easy to fall off, firmer, safer riding. Convenient and easy to install. Specifications: Size: 31.8x90mm, 31.8x110mm, 31.8x130mm, 25.4x90mm, 25.4x110mm (optional) Color: black Material: aluminum alloy Front fork diameter: 28.6mm Handlebar diameter: 31.8x90mm, 31.8x110mm, 31.8x130mm: 31.8mm 25.4x90mm, 25.4x110mm: 25.4mm Package size: 31.8x90mm: 140 x 55 x 45mm / 5.5 x 2.2 x 1.8in 31.8x110mm: 150 x 50 x 45mm / 5.9 x 2.0 x 1.8in 31.8x130mm: 180 x 50 x 45mm / 7.1 x 2.0 x 1.8in 25.4x90mm: 140 x 50 x 45mm / 5.5 x 2.0 x 1.8in 25.4x110mm: 150 x 50 x 45mm / 5.9 x 2.0 x 1.8in Package weight: 31.8x90mm: 307g / 10.8ounce 31.8x110mm: 324g / 11.4ounce 31.8x130mm: 341g / 12.0ounce 25.4x90mm: 296g / 10.4ounce 25.4x110mm: 315g / 11.1ounce Packing List: 1 x Bike Handlebar Riser