Park tool crc 1 crown race cutting tool

to ensure proper headset performance and longevity special attention must be given to accurately machine the fork s crown race seat the crc 1 is a professional quality machining tool for milling both the outer edge and lower surfaces of the crown race seat details includes high speed steel cutters and adjustable collets to machine 26 5mm and 27 1mm crown race seats on 1 forks and 30 1mm crown race seats on 1 1 8 forks unique adjusting system allows a tight fit of the tool on any fork threaded or unthreaded even forks with externally butted steerer tubes ensuring a smooth accurate cut and proper alignment of the fork in the frame ...