Park Tool HTR-1B Head Tube Reamer and Facer

Combines reaming and facing of the head tube to create a perfect fit for most sizes of head cups Includes 33.9mm reamer, and four different size pilots (29.8mm, 30.0mm, 33.8mm, and 36.8mm) Will face frames of EC29, EC30, EC34 and EC37 and it will ream frames of EC34 Quick-release, quick-adjust feature: bottom portion slides off and on easily without threading SHIS standard is EC56