Updated from HHP-1 version (05/03), Longer threaded rod and resized press-plates to accomodate 1" to 1.5" headset sizes . For installing press fit bottom bracket and Headset cups. Nickel-plated, heat-treated steel construction. 2005 updated quick release bottom plate for easy install/removal. Long, rubber coated handles for comfortable use. Includes (#530-2) stepped bushing cup adapters to fit most cup sizes (also available separate for older tools)