Connex chain, 1/2 x 11/128´´, for 11-speed derailleur chain with a width of 5,6mm these chains are compatible with all current 11-speed derailleur systems. high quality materials and the extremaly outer link guarantee long life and outstanding shifting performance. the stainless steel inner link of the model 10sx offer a much more better protection against wearness which spares the expensive sprockets. with attached connex link you can mount and dismantle your chain quickly - all without tools! bolt length: 5,6mm ´´11s0´´, compl. especially high quality nickel-plated, 118links, weight 270g