Features 1. High hardness lock body: The lock section is 15.8mm wide and 9.9mm thick, thickened and resistant to shear, making it safer and more anti-theft. 2. 8-section folding design: The folding design can extend the lock body, providing greater locking space. 3. Reflector on the bracket: At night, the driver is more likely to see oncoming vehicles from behind. The fixing device of the folding lock bicycle password lock ensures the safety of the rider. Not only can it protect your bicycle, but it can also help you stay safe while driving at night. 4. Password anti-theft: A 4-digit password combination bike lock protects your bike for greater security, allowing you to easily set your own password. 5. Installation tutorial: Install the lock frame, tighten the screws, insert the lock frame, and lock the latch. Specification Storage length: 12 x 6 x 4.5 cm Unfolded length: 85 cm Lock core sleeve material: zinc alloy+alloy steel Color: Black Size: 13 x 12 x 7 cm Weight: 814 g Package Include: Bicycle password lock x1 Packaging x1 Lock frame x1