Proper frame preparation is very important. The HTR-1 combines reaming and facing of the head tube to create a perfect fit for most sizes of head cups.
SHIS terminology: The HTR-1 as stock will face frames of EC29, EC30, EC34 and EC37. It will ream frames of EC30. Accessories will allow service in other standards.
NOTE: For sharpening services of cutting tools see Park Tool Sharpening Services. Always use cutting fluid such as Park Tool CF-2 when machining.