X101: highperformance, chamfered, antidrop, lightweight, Singlespeed chain for Mountain, BMX, Fixie, Track applications\n S10: stainless steel construction great for electric bikes, internal gear hubs, and beach cruisers\n K1 Wide (formerly Z710): specially shaped, extrathick outer plates and bullseye riveting for frequent grinding \n S1 (formerly Z410): bushingless design for normal BMX and Singlespeed use\n B1H: nickel plated chain has heavy duty structure with bushing construction\n Z1eHX: heavy duty chain has gone through a stretch proof treatment and features mushroom riveting along with an antidrop design