The 791 is used in conjunction with the Park Tool HTR-1 Head Tube Reaming and Facing Set to ream bottom brackets that use the PF30 standard. The 791 also includes a pilot that allows a facing-only option of the PF30 frame shell.

• Sized for PF30 bottom brackets
• 45.94 mm outer diameter
• Requires use of the 750.2 Centering Cone Adapter
  

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