This helmet lock is made of premium aluminum alloy material, which ensures the durability. Fine Workmanship: This helmet lock is quite long-lasting due to its fine workmanship. Rustproof: This helmet lock comes with a rustproof feature due to its aluminum alloy structure. Featuring a universal fit and durable construction, this part is designed to provide stable and reliable quality enhancement for most bike models. We stand firmly behind our products. For post-purchase installation guidance or troubleshooting, our support team is just a message away., Manufacturer: d5rygh45fh