OTC's Ram Forcing Cap is designed for use with OTC's 55-ton shop presses. Heavy steel construction withstands heavy use under high pressure without shattering. Coated to reduce corrosion. 2-1/4" diameter. 1-5/8"-5-1/2 threads. Requires either the 37368 (for single acting ram) or 38954 (for double acting ram) threaded adapter to attach to ram. Value is at the core of the OTC tool and equipment portfolio. Whether it's a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.