Center-hole rams are ideal for jobs that require a great deal of force and a relatively short stroke Compared to the force it develops, the ram is lightweight, compact, and easy to handle, permitting its use in confined quarters Center-hole feature allows extending jacking screws, cables, puller screws, and more to be insterted through the ram For use with OTC Grip-O-Matic pullers, push-pullers, and shop presses; Engineered for increased strength and durability and meets the ASME B30.1 standards Specifications: Capacity: 30 Tons, Stroke: 2-1/2 inches, Height Collapsed: 7-3/4 inches, Height Extended: 10-1/4 inches, Adapter Plate: Yes, included, Effective Ram Area: 6-1/8 Square inches, Cubic Inch Oil Capacity: 15.46