Engineered and built to accurately face front or rear disc brake mounts to be precisely aligned to rotor. Faces any IS Mount, Post Mount or new Shimano Flat Mount, including low clearance, chainstay mounts Adjustable telescoping axle adapters allow use with any configuration of open or thru axle dropouts and dropout widths (including Boost 110, Boost 148 and all fat bike axles) Includes two different facing cutters--one for IS mounts and one for Post and Flat Mounts