Compatibility: It can be installed on a normal size handlebar (25.4mm), the maximum size is 31.8mm. With double clamps, it greatly improves driving safety. High-quality materials: The bicycle extension frame is made of high-quality aluminum alloy material, which is smoother, corrosion-resistant and durable. Bicycle handlebar extension size: 22.2mm * 200mm / 0.87 * 7.87in (D * L) Application: Suitable for your bicycle handlebars, adding extra storage space for your bicycle lights, GPS or phone, etc. Easy to install: the turnbuckle is durable. Use high-quality screws, double protection. The bicycle handlebar extension bracket is equipped with a hexagonal wrench, which is easy to install, use and adjust. Package includes: 1 x 20cm aluminum alloy bicycle handlebar extension; 2 x aluminum alloy bracket; 1 Allen key. (Please check the size of your bicycle handlebar before adding the bicycle to the shopping cart.)