Sram pc870 8 speed bike chaincompatible with both 7 and 8 speed gearing, the pc870 bike chain operates smoothly in all riding conditions and on all terrain types. Sram has given it a nickel coating to increase its lifespan and to make installation simple, it comes with a powerlink too free joining link. This means you can get your bike back to working order and back to the road or trails in no time.speed 7 or 8 speed drivetrains links 114 quick link joining link included yes, powerlink use road or mountain bike mtb adjustable yes nickel plated an equally smooth operator on city bike paths and country trails powerlink no weak link technology lets you insert, press and lock to join links tool free joining manufacturer's part number cn 870 a1 weight 300g technologiespowerchain ii extremely strong and incredibly precise, sram's powerchain ii increases front and load shifting performance without sacrificing rear shifting precision. The step2 riveting process increases the push pin power for increased strength and durabilitybuy sram components from chain reaction cycles, the world's largest online bike store.