The HTR-1B combines reaming and facing of the head tube creating 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.
Includes 33.9mm reamer (part #754.2), and 4 different size pilots (29.8mm, 30.0mm, 33.8mm, and 36.8mm)
Quick-release, quick-adjust feature: bottom portion slides off and on easily without threading
SHIS terminology: The HTR-1B as stock will face frames of EC29, EC30, EC34 and EC37, and it will ream frames of EC34. Accessories will allow service in other standards.
NOTE: Always use a cutting fluid such as Park Tool CF-2 when machining
Manufacturer's Part Number: HTR-1B