The speed change mountain bike can be installed, The suitable handle diameter is approximately 22mm. Name: bilateral lock handle. Material: Rubber + Aluminium Alloy. Colour: Red, black, blue, silver, gold lock edges (black body). Length: 130mm. Suitable for Handlebar Diameter:22mm. Weight: About 115g. Package Included: 1 pair Lock the sleeve + aluminum alloy ring + plug. Made of high quality material, which is lightweight and durable for long term use without deformation. Rubber material is soft comfortable to hold, anti-slip and wear-resisting, help to improve the safety when you ride in raining or sweat. Comes with aluminium alloy rings that can lock the handlebar grip firmly.