Wolf Tooth Direct Mount Chainring - 36t SRAM Direct Mount Drop-Stop B For SRAM 8-Bolt Cranksets 0mm Offset BLKWolf Tooth Direct Mount Chainring 36t SRAM Direct Mount Drop Stop B For SRAM 8 Bolt Cranksets 0mm Offset Black. These Wolf Tooth direct mount rings are designed for SRAM cranks with 8 bolt mounting. This chainring is equipped with the patent pending Drop Stop asymmetrical tooth design for the best in wear life mud clearance and chain retention. Drop Stop chainrings are designed for use with 1x9 1x10 1x11 and 1x12 drivetrains Compatible with all 10 11