Designed specifically for oval chainrings, keeping your chain secure at every single crank position. Also works with round rings Includes integrated taco Features a unique adjustable chainline from 4853mm making it compatible with standard and Boost setups Fits 2634T oval or 28-36T round chainrings Backplate is 7075 aluminum, cage and bash plate are GF + PA66 polymer composite, bolts are titanium T25 Third party online retailers must be preapproved by manufacturer