Used in conjunction with the crc 1 park tool crown race cutting tool to machine 398mm crown race seats 15 standard on tapered forks with 1 18 steerer tubes includes precision machined adaptor body and 398mm high speed steel crown race cutter the crc 15 will work on forks with a maximum 15 taper of 425 inches park tool crown race cutting tool features adaptor for the park crc 1 that allows the quick and perfect facing of 15 inch 398 mm standard crown races des