This #690-XL tool is a larger version of the 690 facer for the HTR Headtube Facer and Reamer. It has a nominal outside diameter of 57mm and it may be used in conjunction with the 788 reamer. It is also used with the 767 Pilot or the 768 Pilot to face only the large diameter headstubes of the "low profile" ZS-type headsets.
NOTE: Always use a cutting fluid such as the Park Tool CF-2 when machining.
SHIS terminology: The 690-XL may be used on frames in ZS41, ZS44, ZS49, EC44 and EC49 headsets
Manufacturer's Part Number: 690-XL