Operates with hydraulic flows between 13-25 gpm (49-95 lpm). Features manual side-shift to get up close to buildings. Single Standard chains recommended for loose, damp soil. Double Standard chains recommended for harder, drier soil, roughly twice the number of teeth. Half Rock & Frost chains recommended for harder, frozen and rocky digging conditions. Comes complete with trench cleaner arm, hoses and flat face couplers.