Husqvarna H23 is a fast cutting .325 pitch chisel chain with the smooth performance of a low vibration bumper drive link. Razor sharp chisel cutters make quick work of both hardwoods and softwoods. H23 works best in clean cutting conditions, where there is limited contact with dirt and other abrasive materials. H23 chain sharpens with a 3/16" round file or 1/8" grinding wheel.