Hytec® air advance work support, 7,500 lb maximum force, 1/4 in NPTF port, 1/2-13 UNC body thread, 5,000 psi pressure, 3.88 in W x 3.25 in D dimensions. Single acting. Sealed against contamination. Convenient dual air inlets allow easy connection and chaining of work supports. Power Team® 100847 Hytec® Air Advance Work Support, 7,500 lb Max Force