CONNEX chain 12-speed, 1/2 x 11/128 self-service package, with a width of 2,10mm, these chains are compatible with all common 12-speed shifting systems. High-quality materials and the extremely shaped outer plate promise a long service life and outstanding shifting properties. The enclosed Connex link makes it easy to mount and dismount the bicycle chain without any tools.Specifications: - Shifting Type: Derailleur Shifting - System Compatibility: 12-speed - Division: 1/2´´- Width In Inch: 11/128´´- Incl. Connecting Link: Yes - Weight: 0,301 Kg