Wolf Tooth Direct Mount Chainrings for SRAM Cranks are now available in our Drop-Stop ST tooth profile! This tooth profile is optimized for the 12-speed Shimano Hyperglide+ chain: a first for our Direct Mount SRAM chainrings. Drop-Stop ST leverages the Shimano HG+ chamfers to provide additional clearance, prevent wear while riding, and also to ensure chain retention on varied surfaces. Compatible with cranks from SRAM, Praxis, Cane Creek, and other cranks that use a three-bolt direct mount, this chainring is available in both round and PowerTrac elliptical in 30T, 32T, and 34T with Boost offset.