This is a brief overview and us using this CID Extreme Duty Rotating Tree Shear. We used it to cut a 4x4 in half but it can do up to 12" trees and limbs. See the details about this unit below. Our Xtreme Rotating Tree Shear is constructed with a 1’ thick AR400 blade, which gives you the ability to cut up to 12” diameter trees and logs. It has a 5” bore cylinder that can generate up to 30 tons of shearing force. The CID Xtreme rotating tree shear features a 90 degree rotation that is offered in manual or hydraulic.(Note: manual is a two man operation.) It’s design forces trees to fall consistently to the right, allowing the operator to accurately position where the tree will land. If you are looking to save a little more money. We also offer a non rotating tree shear for the person who only needs to cut the trees down and skid them out of the woods.