HIGH-QUALITY MATERIAL - The motorcycle helmet lock is made of aluminum alloy, anti-smashing, anti-pry, anti-rust and waterproof. Easy to install: the helmet anti-theft device Suitable for motorcycle models with 22-28mm handlebars. Comes with Allen key, easy to install and fits your motorcycle perfectly. Safe and Anti-Theft: You can lock your helmet securely on the motorcycle helmet lock and the lock cannot be broken without the help of removal tools. Mount anywhere: You can mount the helmet lock on the head of your motorcycle or on the 22-28mm metal frame of your motorcycle. Wide range of applications: The secure motorcycle helmet lock can be used on motorcycle models such as motorcycles and scooters. Not only can it be used to lock the helmet, but it can also be used as a hook. You can use it according to your needs. Note: The data is all measured manually, please allow 1-3cm error due to differences in light and display, there may be some deviations. color differences, please refer