Oregon 90PX is part of the AdvanceCut product line of professional chainsaw chains. 90PX is a narrow kerf, 3/8" low profile chain, designed for pole pruners, low horsepower gas chainsaws and battery powered chainsaws. This chain makes a thinner cut than standard 3/8" low profile saw chain, so it requires less power from your chainsaw. The Chamfer Chisel cutters have great stay sharp features, while still giving you fast cutting speeds. Like most Oregon chainsaw chain this style has the LubriTec oiling system to help keep both the bar and chain well lubricated. Sharpens with 3/16" file or 1/8" grinding wheel. 90PX will not fit unless used in conjunction with a .043" gauge narrow kerf bar.