Adjustable Bicycle Handlebar Stem Variable 60 Degree Angle Aluminum Alloy Bike Handlebar Riser Road Bike Front Fork Stem Adapter 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: 31.8*85mm, 31.8*100mm, 31.8*120mm, 25.4*100mm, 25.4*120mm (optional) Color: black Material: aluminum alloy Torque: 10-12N.M Front fork diameter: 28.6mm Hole spacing: 31.8*85mm: 85mm 31.8*100mm/25.4*100mm: 100mm 31.8*120mm/25.4*120mm: 120mm Handlebar diameter: 31.8*85mm/31.8*100mm/31.8*120mm: 31.8mm 25.4*100mm/25.4*120mm: 25.4mm Package size: 31.8*85mm: 132 * 55 * 40mm / 5.2 * 2.2 * 1.6in 31.8*100mm: 155 * 52 * 40mm / 6.1 * 2.0 * 1.6in 31.8*120mm: 167 * 43 * 40mm / 6.6 * 1.7 * 1.6in 25.4*100mm: 155 * 43 * 40mm / 6.1 * 1.7 * 1.6in 25.4*120mm: 165 * 52 * 40mm / 6.5 * 2.0 * 1.6in Package weight: 31.8*85mm: 271g / 9.6ounce 31.8*100mm: 313g / 11.0ounce 31.8*120mm: 312g / 11.0ounce 25.4*100mm: 299g / 10.5ounce 25.4*120mm: 312g / 11.0ounce Packing List: 1 * Bike Handlebar Riser