Oregon 90PX040G Low Profile 3/8-Inch Pitch 0.043-Inch Gauge 40-Drive Link Saw Chain Oregon 90PX040G 3/8" Low Profile .043" Gauge 40 Drive Link Saw Chain Narrow .043" gauge helps reduce the weight of the bar-chain combination approximately 15% Always install 90PX chains on a .043" gauge Double Guard bar (MLE part numbers) to obtain all the advantages of the Micro-Lite system Low-vibration chamfer chisel cutters have an angular shape with twin cutting corners for excellent performance and edge-holding durability Standard Sequence; Recommended Bar Lengths: Up to 16in. (40cm) Recommended Saw Sizes: Up to 42cc