Product Description: This package includes 10 replacement parts for Black+Decker string trimmers. These parts are compatible with various Black+Decker trimmer models, including LCC140, GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600,ST9000, CST1000, CST1100, and CST1200. Each replacement part is designed to work with Black+Decker automatic string trimmers, providing an easy and efficient solution for replacing the trimmer string. The replacement spool has a 0.065-inch diameter wire and features a feed system that usescentrifugal force to automatically feed the trimmer string as needed. The spools are made of high-quality 0.065-inch diameter reinforced nylon wire, which ensures fast cutting and a longer service life. However, please note that this spool is only suitable for cutting tender weeds, and a blade should be used for tough weeds. The package includes 6 replacement trimmer spools, 2 replacement spool covers, and 2 springs, providing everything you need to replace the worn-out parts on your Black+Decker string trimmer.