Compatibility: Installs on standard handlebars (25.4mm), with a maximum size of 31.8mm. Double clamps enhance driving safety. High-quality materials: Made of high-quality aluminum alloy, offering a smooth, corrosion-resistant, and durable design. Bicycle handlebar extension dimensions: 22.2mm * 200mm (D * L). Application: Fits bicycle handlebars, providing additional storage space for lights, GPS, phones, and other accessories. Easy to install: Features durable turnbuckle and high-quality screws for double protection. Includes a hexagonal wrench for simple installation, use, and adjustment. Package includes: 1 x 20cm aluminum alloy bicycle handlebar extension; 2 x aluminum alloy brackets; 1 x Allen key. (Please verify your bicycle handlebar size before purchasing.)