Extreme duty tree shear Model and brand is unknown, Hydraulic hose was pinched so will need a new one. was ran on a Cat299D3XE $4500 I traded this attachment for work, The model and brand was painted over so i dint have this info. it handles tree's up to 13 inches in circumference. If you are a SERIOUS buyer and want to test before buying I have some land about 15 mins away for you to run it on. You will need to show proof of $4500 and pay half up front, we head to the land for you to run it. Then you pay balance after you see it work.