Simple and economical, the Park Tool HHP-3 is designed to install all sizes of bicycle headset bearing cups (1" to 1.5"), as well as bearing cups for most press fit bottom bracket standards including PF41 (BB86, BB92), PF42 (BB30, OSBB), PF46 (PF30), Trek® BB90 & BB95, and one-piece crank systems.
Threaded rod is nominally 16 mm (0.63") diameter
Pressing plates are nominally 63 mm (2.48") in diameter
