The Wolf Tooth Components Drop-Stop Flattop Chainrings are the perfect option for a wide variety of applications. The bolt pattern, tooth count and Drop-Stop tooth pattern makes them ideal for 1x cyclocross, gravel, commuting and even road drivetrains. The Flattop tooth design makes these chainrings compatible with 9,10, 11 speed chains, certain 12 speed chains and all SRAM Flattop chains. Note: These chainrings do NOT fit Shimano DA9000 or Ultegra 6800 cranksets and are not compatible with Campy CX10/11 or Shimano HG+ 12spd chains Features: Chainring with Drop-Stop tooth design prevents unwanted chain drop The perfect chainring for cyclocross, gravel riding, commuting and more Tooth shape accommodates larger rollers of Flattop chains Made in the USA from 7075-T6 aluminum alloy Specifications: Teeth: 38T Ring Type: 1x (Drop-Stop) Mount Style: 5-Bolt BCD: 130mm Offset: N/A Speeds: 9, 10, 11spd & 12spd SRAM Eagle, Flattop AXS, KMC & Campagnolo Shape: Round Material: Aluminum Weight: T- Color: Black