Oregon R45 AdvanceCut 12-Inch Chainsaw Chain, Fits Craftsman, Husqvarna, Ryobi, Black & Decker Pitch: 3/8" Low Profile, gauge: .043", narrow kerf, drive link count: 45 LubriTec keeps your chain and guide bar oiled for less friction and longer life Top-Plate Filing Indicators make accurate sharpening easier For saw sizes up to 42 cc Always use narrow kerf chain in combination with narrow kerf designed bars Longer nose life and better performance with a new sprocket nose system