WITH INSTALLATION KEY: Quick installation with a wrench. The extension bracket can be installed in a minute. LIGHTWEIGHT: The aluminum alloy extension rod and bracket are super light, hold firmly and securely on the handlebars. A headlight, speedometer or other accessories can be mounted on the handlebar extension bracket. FOR MOST HANDLEBARS: The bracket fits most bicycle handlebars with a diameter between 22.2 and 31.8 mm, and the position of the extension handlebar can be varied. The colors are bright and beautiful. SPACE SAVER: Extremely light, non-slip and fabric-proof, effectively prevents the handlebar extender from slipping. GUARANTEE: If you are not satisfied with our product, please feel free to email us and we will reply as soon as possible and help you solve your problem.