1. oem replacement ; 2.A4VSO40,A4VSO71,A4VSO125,A4VSO180,A4VSO250,A4VSO300 ... hydraulic drive with open loop.1.Wildly applied for ceramic press, refractory press, steel, forging and pressing, metallurgy ... 750 milliliter per rotation (A4VSO300 is special designed for ceramic press)3.Angle indicator with bevel disc 4. Excellent ... 355, 370 is ready at any time. OEM replacement A4VSO250 viarable piston pump