Narrow wide chainrings compatible with Race Face CINCH system cranks. Direct mounting allows an easy switch between rings and spiders. FEATURES: Compatible with 9, 10, 11 and 12-speed (excluding Shimano 12-speed chains) Narrow Wide tooth profiling ensures consistent chain retention Lockring installed/removed with ISIS BB tool Stiff 4mm plate thickness to transfer loads without flexing SPECS: Material: Aluminum Round or Oval: Round Color: Black Chainline/Hub Compatibility: 135/142 MTB Hubs , 170/177 Hubs , 190/197 Hubs , 150/157 DH Hubs , 157 Super Boost Hubs , 141/148 Boost Hubs Direct Mount Type: Direct Mount CINCH Material: Aluminum Tooth Count: 26 Ring Position/Type: Single , Chain Retaining Single Ring Drivetrain Speeds: 9 , 10 , 11 , 12 Defined Color: Black Chainring BCD: Direct Mount CINCH Offset: 3