Versatile Retractable Cable Lock: Designed for optimal security, the UP Security cable lock features a retractable spring wire that easily adjusts to the length you need, providing versatility and convenience. Lightweight Helmet Lock: This lock serves as an excellent helmet lock, securing your helmet to your bike efficiently. It's lightweight design makes it comfortable and easy to carry around. Compact Small Bike Lock: Despite its small size, this bike lock delivers robust security. It's compact, making it ideal for kids' bikes and easy to carry even when you're on the go. Anti-Theft Cable: The high-quality cable is resilient and robust, ensuring resistance against theft attempts. It provides an extra layer of protection to your bike, keeping it safe at all times. The initial password is 0-0-0-0; for combination reset instructions, see User Manual in Technical Specifications section of this page. Note: When changing the password, make sure to save the new password properly., Weight: 0.15 Pounds, Manufacturer: UP Security