12-speed, 1/2" x 11/128 SB-packaged, with a width of 2.10 mm, 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 characteristics. With the included Connex link, the bicycle chain can be easily mounted and dismounted, entirely without tools! Pin length: 5.30 mm Number of links 126 pc. Item type Width inch 11/128 " Main color silver Incl. master link yes Shifting type Derailleur gear System compatibility 12-speed Pitch 1/2