Oregon micro lite 90sg is a 3 8 low profile saw chain with narrower drive links especially designed to fit on small consumer saws equipped with narrow gauge 1.1 mm 0.043 guide barsrecommended for electric saws and petrol saws up to 35cc and guide bars up to 16 40cm on electric saws and up to 14 35cm on petrol powered sawsfeatures chamfer chisel cutter design providing improved performance and a better stay sharp incorporates the oregon vibe ban low vibration feature, lubrilink and lubriwell lubrication features for enhanced service life witness marks on the cutter top plates assist in chain sharpeningspecifications depth gauge 0.025 file size 4.5mm gauge 0.043 pitch 3 8 number of drive links 55how do i measure the length of my chain? The length of your chain is determined by counting the number of drive links in your chainyour drive link count has a direct correlation to your bar’s lengthbe careful a bar made by oregon may take a different drive link count than that of another producerhere’s a tip count the number of drive links in the chain you have now, and write that number down someplace where you can find itor, if you have an oregon chain in an oregon box, the drive link count is stamped on the flap you can save that flap for future reference make model size cm size inches handy thcs45 40 16 mcculloch em235 40 16 promac 2200 40 16 titanium es2200 40 16 stihl ms230 40 16 stihl mse160c 40 16 stihl mse180c 40 16 the models listed above are for guidance onlyplease check with manufacturer handbook to ensure suitable fit and installation instructions