Skiptooth version of the popular Husqvarna H47 saw chain. H47S is highly recommended for longer bars, because it has less cutters to sharpen once it dulls. Skiptooth design also allows for greater sawdust clearance when making cuts on bigger wood. Razor sharp chisel cutters make quick work of both hardwoods and softwoods. H47S works best in clean cutting conditions, where there is limited contact with dirt and other abrasive materials. H47S chain sharpens with a 7/32" round file or 3/16" grinding wheel.