Oregon 90PX chain offers higher chain efficiency, ideal for small, low powered saws great for landscapers and homeowners. The .043 gauge narrow kerf cutting systems increase efficiency. They need less power from the saw than standard cutting systems. Pitch: 3/8" Low Profile™, gauge: .043", narrow kerf, drive link count: 56LubriTec™ keeps your chain and guide bar oiled for less friction and longer lifeTop-Plate Filing Indicators make accurate sharpening easierFor saw sizes up to 42 ccAlways use narrow kerf chain in combination with narrow kerf designed barsThis saw chain met the kickback performance requirement of ANSI B175.1-2012 when tested according to the provisions of ANSI B175.1-2012. Low-kickback saw chain meets the kickback performance requirement of CSA Standard Z62.3.