X11 Chain Solid pins, inner and outer plates make for an economical chain choice with all the performance of higher level X-Series chains. Key Features Includes KMC Missing Link 11 Features KMC&';s highest pin power for unsurpassed riveting geometry KMC&';s Double X durability Double "X" bridge shape allows for precise gear shifting Outer plate chamfering allows for accurate shifting Inner plate chamfering allows for expeditious shifting