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. 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