Oval Guide, Premium Chain Guide, ISCG05

- Designed specifically for oval chainrings, keeping your chain secure at every single crank position. Also works with round rings\n- Features a unique adjustable chainline from 48-53mm making it compatible with standard and Boost setups\n- Fits 26-34T oval or 28-36T round chainrings\n- Backplate is 7075 aluminum, cage is GF + PA66 polymer composite, bolts are titanium T25\n- ISCG05-BSA model uses only one bolt of the ISCG mount and is held in place with the BSA threaded bottom bracket\n- Third party online retailers must be preapproved by manufacturer