Wolf Tooth 76 BCD Chainring - 30t, 76 BCD, 4-Bolt, Drop-Stop A, Compatible with SRAM 76 BCD and Specialized Stout, BlackThe Wolf Tooth 76 BCD chainrings fit any SRAM 76 BCD spider or Specialized Stout crankset. Features Wolf Tooth's Drop Stop tooth design for maximum chain retention Drop Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12 drivetrains Compatible with all 10 , 11 , and 12 speed chains, with the exception of Shimano 12 speed chains Shimano 12 speed chains require the use of Wolf Tooth's Shimano 12 speed specific chainrings If using a 9