These Wolf Tooth Elliptical Direct Mount Chainrings are designed to work with Cane Creek eeWings cranksets and SRAM direct mount cranksets with a 3-bolt interface. The proprietary Powertrac design has an ovality of 10% and a timing of 112 degrees after top dead center providing benefits such as greater rear wheel traction. The tooth profile was developed specifically for Shimano’s XTR XT and SLX 12-speed Hyperglide+ chain.