Park Tool Alésoir Surfacing D 57 for Integrated JD Type

SHIS terminology: The 690-XL can be used on the frames of the ZS41, ZS44, ZS49, EC44, EC49, and IS52 headsets. For cutting tool sharpening services, see Sharpening Services Park Tool. Always use a cutting fluid such as Park Tool CF-2 when machining.

The 690-XL is a larger version of the 690 facer for the HTR-1 reamer and headset facer. It has a nominal outer diameter of 57 mm. It can be used with the 788 reamer. It is also used with the 767 Pilot or the 768 Pilot to only face the large diameter head cups of 'low profile' type ZS headset sets.