OTC (4120) Power Twin Single-Acting Hydraulic Ram - 17-1/2 Ton 17-1/2-ton capacity Complete with OTC 21669 threaded ram head insert, ram attaching screws, and OTC 9796 ram half coupler For Operating pressures up to 10,000 PSI To be used with Grip-O-Matic pullers, Push-Pullers, and shop presses Center hole design is ideal for jobs that require a great deal of force and a relatively short stroke