The H50 Series Hydraulic Gear Pump with Keyed Shaft from Buyers Products is a sturdy, heavy duty bi-rotational pump that can be 2-bolt or 4-bolt mounted in an SAE B mount. This pump handles greater flow rates up to 54 GPM for a 2-1/2 in. gear width. Choose from a range of models with flow rates and pressure ratings to meet your working needs. All of the models feature a 1 in. keyed shaft.