1. Material: carbon steel
2. 13.71mm thick lock body to improve anti-theft performance
3. Bilateral unlocking, thieves cannot easily steal
4. Alloy anti-theft lock cylinder to improve safety performance
5. Smooth and shiny surface, does not hurt the frame, feels comfortable
6. Serpentine groove key, with many groove changes and low mutual opening rate
7. Keyhole dust cover, waterproof and dustproof, not easy to rust
8. Weight: 975 grams
9. Size: 15.4x28.7cm