Park Tool 799 Internal milling cutter

The 799 is a 47mm reamer for cutting the lower head tube on frames with an IS47 bearing for an integrated 1-1/4" headset.

Features:

• 47mm outer diameter
• 45° bearing set geometry
• Durable tool steel
• Neutral rake grind for use in all common bicycle frame materials
• For use with the HTR-1 or HTR-1B head tube reamer and face mill set, 690-XL face mill and #750.2 centering cone adapter