Proper frame preparation is very important. The HTR-1B combines reaming and facing of the head tube to create a perfect fit for most sizes of head cups. HTR-1B comes with a reamer of 33.9mm for the 1-1/8 inch headset standard.
SHIS terminology: The HTR-1B as stock will face frames of EC29, EC30, EC34 and EC37. It will ream frames of EC34. 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.