The 788 is used in conjunction with the Park Tool HTR-1 Head Tube Reaming and Facing Set to ream head tubes that use the 1 1/8" internal cup headset standard. Includes part #788S Spacer.

• Sized for 1 1/8" internal cup headsets
• SHIS: sized for ZS44 and EC44 head tubes
• 43.95 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.