The manual tensioning chain of 12 mm (cb-12) & 9 mm (E9)
- 12 mm space (cb12) on the inside and on the tire tread and 9mm (E9).
- Manual tension system: One stop to mount the chains and one stop to dismount them.
- Closed shortening hooks avoid coils on the chain.
- Innovative design and unique color-coded assembling parts.