1. Material: zinc alloy + alloy steel + ABS plastic
2. Number of chain pieces: 26 pieces, single piece size 16 x 45 mm, 3. Partial carburizing heat treatment technology, hardness outside HRC45, inside HRC10-HRC25
4. Lock core: sheet lock core
5. Lock core sleeve: zinc alloy + alloy steel
6. Key: PA6 plastic +59 copper
7. Lightweight, small size, easy to use, strong practicability
8. It can be fixed on the frame or tube seat, or on the bottle cage
