Hydraulic Recommendations ：15-20 GPM @ 3000 psi, Return Pressure (starting pressure 3000 psi, 20 gpm) , Rated Weight Capacity for Handling Rocks： 5000 lbs (2268 kg), Rated Weight Capacity for Handling Trees：2000 lbs (907 kg), Max Tree Length ：35 ft (10.6 m), Rotation Angle .：0° - 127° to Operator’s Left, Attachment length, width and height ：49.6*23*11.4 in, Base L×W×H ：60.2*20.2*23.5 in, 337 (kgs), 1630*1630*600 (mm)