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
Maximum working length of 385 mm (15.16")