High-quality materialThe black helmet combination lock is made of high-quality metal and thick PVC, strong and durable, high strength, good toughness, fine workmanship, rust-proof and wear-resistant, not easy to break and deform, anti-theft. The PVC coating throughout the body can effectively prevent scratches and ensure the safety of your bicycle. 4-digit password helmet lockThe factory default password for the small bicycle lock is 0000, tens of thousands of password combinations can be set, with a high safety factor. You can easily follow the steps in the user manual to reset the code you want, it opens and locks very quickly, increasing the security level and reducing the risk of theft. Retractable DesignThe bicycle combination lock can reach 150cm in length when stretched, so you can easily attach your helmet to your bicycle or motorcycle and wrap it with ease. Enough to lock all parts of the bicycle, such as the front and rear wheels, handlebars and brackets, a second bicycle or anywhere. Portable and ConvenientThe motorcycle helmet lock is small and lightweight, you can carry it with you and put it in your backpack to save space for daily travel. With the spiral design, it can be rolled up automatically, more convenient to install and use. No need to carry keys when you go out, no more worry about forgetting or losing your keys, bringing you more convenience. Multifunctional Helmet LockHelmet locks can lock bicycles, strollers, skis, motorcycles or scooters in addition to locking doors, fences, helmets, sports equipment and toolboxes. Enough to meet your daily needs.