Narrow wide chainrings compatible with Race Face CINCH system cranks. Direct mounting allows an easy switch between rings and spiders.Steel ConstructionCompatible with 9, 10, 11 and 12-speed (excluding Shimano 12-speed chains)Narrow Wide tooth profiling ensures consistent chain retentionLockring installed/removed with ISIS BB toolStiff 4mm plate thickness to transfer loads without flexingItem SpecificationsDefined ColorBlackDirect Mount TypeDirect Mount CINCHDrivetrain Speeds10Drivetrain Speeds11Drivetrain Speeds12Drivetrain Speeds9MaterialSteelOffset3Round or OvalRoundTooth Count28 RaceFace Narrow Wide Direct Mount CINCH Chainring Direct Mount Chainrings UPC: 821973330440