Park Tool HHP-3 Home Mechanic Bearing Cup Press Airflex Pro Ideal for releasing mainspring tension

Ideal for releasing mainspring tension when storing shotguns

Medium & Large Sizes

The Zen vane is a low profile shield cut vane designed for indoor spot shooting

Each tool is assembled and calibrated at Park Tool’s factory in Minnesota

Wire kit / acoustic tube not included

Park Tool HHP-3 Home Mechanic Bearing Cup Press Airflex Pro Ideal for releasing mainspring tensionSimple and economical, the HHP 3 is designed to install all sizes of head cups (1" to 1 1 2") and one piece bottom bracket cups. Will also press BB30 and BB90 (BB86, or BB92) system cups. The thread of the HHP 3 is 5 8" (16mm) diameter (nominally 16mm) and will work to press the BMX bottom brackets.