Product Name: Motorcycle Helmet Lock Type: Manual lock Material: Aluminum Alloy Color: Black Size: 5.5*4.7*2.4cm Features: Small and light.The helmet lock is made of high-quality aluminum alloy and iron materials. Easy to install . Most models are compatible: our helmet lock is about 22-28mm / 0.9-1.1in, which is suitable for electric bicycles, bicycles, motorcycles, etc. Simple installation: when you buy our helmet lock, you will have matching wrench tools and screws for installation. There is no need for you to buy other tools, just tighten the screws with a wrench where the lock is fixed. High-quality materials: The helmet lock is made of high-quality aluminum alloy and iron materials,has the characteristics of scratch resistance and durability,has undergone fine surface treatment to ensure reliable performance and long service life. Our helmet lock is more reliable than other Helmet lock and safer, is your ideal choice. Fine workmanship: helmet lock is manufactured through precision machining. Each of our Helmet lock has been carefully designed and manufactured. Each has two keys, one of which can be used as a spare key. Place of Application: Suitable for handlebars of 22-28mm / 0.9-1.1in Package Including: 1 x Helmet Lock 2 x Keys 1 x Wrench