Hydraulic Log Splitter Pump Hydraulic Motor 16 Gpm,2 Stage Hi Lo Gear Pump Sturdy and Durable Rapid Start Low Noise Quick Oil Output Fully Equipment Wide Application Rotation is clockwise:,Maximum pressure: 4000 PSI,4 holes spaced 2 on center:,5- 5/8 L without shaft:,3 -3/8 across mounting surface:,Second Stage: 3.5 GPM @ 2500 PSI,Outlet port: 1/2,First Stage: 13 GPM @ 650 PSI,Bolt circle: 2.83in.,Woodruff key: 1/8in,3 across body:,For use with open center hydraulic systems only:,Inlet port: 1,Minimum 8 HP or larger gas engine, direct drive only, horizontal shaft:,Mounting hole diameter:.344in,7- 1/4' L with shaft: