This innovative tree trimming attachment uses the height and hydraulic power of a tractor with front-end loader to create a trimmer that is quiet, safe and environmentally friendly without sacrificing power and usability. It mounts to the front-end loader's bucket and connects to an auxiliary hydraulic hook-up for power. The 20' bar, 0.325 pitch saw sits on an 8-ft. steel mast that gives you an 18 to 21-ft. reach, when used with a fully extended loader bucket and operates at 5000 RPM. Because the Limbinator uses hydraulic power instead of a gas engine, the only sound it makes comes from the spinning chain and the operator can worry less about falling limbs from the safety of a tractor seat. HP 12 1/2, Chain Pitch in. 0.325, Oil Pump Flow 8 GPM, Engine Speed RPM 5,000, Bar Length in. 20, Chain Saw Type Hydraulic, Tool Weight lbs. 84. Self-oiling system provides continuous lubrication directly from your tractor's hydraulic system Reversible motor allows an operator to back the chain out of a pinch Easily installed, attached and removed at only 84 lbs. Uses 8 GPM flow at 1500 PSI Uses 3/8in. or 1/2in. hoses hoses not included.