Park Tool Pressfit 30 Shell Reamer and Pilot Set. Features: Used to ream and face Pressfit 30 bottom bracket shells to an ID of 45.94mm. Used in conjunction with HTR-1 head tube reaming and facing set (PK-6710), 750.2 centering cone adapter (PK-6735) and 690-XL facing cutter (PK-6730) Specs: Description:Pressfit 30 BB shell reamer and pilot set, #791 Remarks:Use with PK-6737 (#690-XXL facing cutter) & PK-6735 (#750 centering cone)