Size: 75 x 62 x 22mm Weight: 150g Material: Ultra-lightweight aluminum alloy Color: Black This is an imported product from China, and there may be some scratches on the main body. Please refrain from purchasing if you are concerned about this. No claims or returns are accepted. This is a universal type and can be attached anywhere with a Φ20-26mm pipe. It can be installed on pipes up to approximately 26mm in diameter. Comes with spare keys. The keys and keyholes are a unique set, and even keys from the same product will not work. It is recommended to create a spare if you lose one. This is an upgraded version that is lightweight, sturdy, and has an anti-theft structure, combining the best features. Packing details: Helmet lock body Keys x 2 Hex wrench Cushioning belt Japanese instruction manual #HelmetHolder #BicycleHolder #HelmetLock #HelmetLockHolder