The 690 is a facing cutter designed to be used in conjunction with the HTR-1, HTR-1B, BFS-1, or BTS-1 to face head tubes and press fit bottom bracket shells.

Faces the following bottom bracket standards:

• English threaded
• Italian threaded

Faces the following headset standards:

• 1" external cup
• 1 1/8" external cup
• 1 1/4" external cup

SHIS terminology: The 690 will face EC29, EC30, EC34 and EC37 frames.

NOTE: Always use cutting fluid such as Park Tool CF-2 when machining.