SRAM XX Cranksets.More upshift points provide faster, more reliable shiftingMore release points and tapered outer chainring provide faster, more reliable shifting49.5mm chainline allows all 10 rear cogs to be used with the big and small chainringLowest Q factor of any mountain cranksetItem SpecificationsColorBlackWeight572gSpindle Interface TypeBB30Pedal Spindle9/16"Bolt Pattern4-BoltChainring BCD80,120mmArm Length175mmRings28-42Crank-FD TypeSRAM 2x10 28/42,SRAM 2x10Crank Intended UseMountainChain CompatibilitySRAM 10,Shimano 10Defined ColorBlack