3/8" pitch .043" gauge. AdvanceCut technology for solid performance and reliable durabilty. Durable, easy to maintain and forgiving, compared to round-cornered chains. LubriTec technology keeps chain and guide bar oiled for less friction and longer life. Top-plate filling indicators for easier, more accurate sharpening. Offers high chain efficiency, ideal for small, low-powered chainsaws. The Oregon 90PX offers higher chain efficiency, ideal for small, low powered saws great for landscapers and homeowners (replaces the 90SG range). The Micro-Lite� narrow kerf cutting systems increase efficiency as they need less power from the saw than standard cutting systems. The narrow .043" gauge reduces the weight of the bar and chain by roughly 15%. Low-vibration, low kickback Chamfer Chisel� cutters' twin cutting corners offer outstanding performance. They are durable, easy to maintain and forgiving, comparable to round-cornered chains. Bumper drive link paired with depth gauge design, offers reduced kickback with strong performance. Always use Micro-Lite narrow kerf chain in combination with Micro-Lite bars Low-Profile Cutters Full-Complement Chain Arrangement 56 Drive Links Low Kickback Design Low Vibration Chamfer Chisel Cutters Fits Makita UC4020A UC4021A UC4041A Chainsaws