Husqvarna PS50 Highcutter Hydraulic ChainsawPolesaw. It is operated with hydraulic pressure from a bucket truck, powerpack or from any source that creates hydraulic pressure. This type of saw is used for trimming and clearing around powerlines, buildings, orchards etc. The fiberglass shaft extends from 8 to 126. The bar is 11. The cutting head can be rotated 360 degrees.