Check the listing for details. Wolf Tooth Elliptical Direct Mount Chainring - 34t, Direct Mount, Drop-Stop B,. Condition: New. Listed at 84.95 USD. These Wolf Tooth Elliptical 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.Elliptical chainring shape provides better efficiency in the recovery zone, as well as increased traction thanks to consistent torque. 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 12-speed chains. 12-speed chains require the use of Wolf Tooth's 12-speed specific chainrings. Compatible with SRAM AXS cranksets and other cranks that use the 8-bolt mounting. Includes set of 8 custom T20 stainless steel bolts. Made.