Features: Helmet locks made of zinc alloy,durable,scratch-resistant,rust-proof,drop-resistant,lock cylinder electroplating process,good wear resistance.Motorcycle helmet locks simple shape,will not affect the overall appearance of the motorcycle,is-your ideal-choice. Helmet lock with keys suitable for 0.8-1inch handle diameter, wide application range,easy to lock,no need to worry about someone stealing your helmet.Portable bike lock anti-theft design, the screw can not be unscrewed when locked, and the anti-theft performance-is higher. The helmet lock is-equipped with 2 keys, which is-very convenient to use. You can use one of the keys as a spare kit. If you need to leave for a while, it-is convenient to lock the helmet on the motorcycle. Anti-pry design, can not unscrew the screws when locked, higher anti-theft-performance. High quality metal lock, strong and durable, waterproof and rustproof, you can-hang multiple helmets, handbags, storage bags, school bags etc. Specifications: Material:Metal Size: As Picture Shown Color:Black Package Includes: 1x Helmet Lock 2x Keys note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.