12-speed, 1/2" x 11/128 SB-packed, 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 superior shifting properties. With the included Connex link, the bicycle chain can be easily assembled and disassembled, completely without tools! Pin length: 5.30 mm Number of links 126 pc. Article type Width inches 11/128 " Main color silver Incl. master link yes Shifting system derailleur gear System compatibility 12-speed Pitch 1/2