This 360 degree wide-angle rear-view mirror can be installed on the handlebar to assist driving and improve safety. Features: 360 rotatable: Movable lens can be angled at any times to see what is coming from different directions. Fits 16~22mm inside diameter of the handlebar. Fits most mountain bikes. Smooth surface, full texture, nice refraction effect. Enhanced bracket, higher hardness, crash car is not easy to break, safes and practical. The mirror adopts design to improve the safety of cycling. Specifications: Type: short, long (optional) Quantity: 1pc, 2pcs (optional) Material: nylon PA / P-P / acrylic Item size: short: 170 * 60mm / 6.7 * 2.4in long: 200 * 60mm / 7.9 * 2.4in Package size: 1pc: short: 132 * 83 * 26mm / 5.2 * 3.3 * 1.0in long: 203 * 83 * 26mm / 8.0 * 3.3 * 1.0in 2pcs: short: 132 * 83 * 60mm / 5.2 * 3.3 * 2.4in long: 203 * 83 * 60mm / 8.0 * 3.3 * 2.4in Package weight: 1pc: short: 83.3g / 2.9ounce long: 104.7g / 3.7ounce 2pcs: short: 166.6g / 5.9ounce long: 209.4g / 7.4ounce Packing List: 1pc: 1 * Rearview Mirror 2pcs: 1 * Pair of Rearview Mirror