Product Item Package Quantity:10[Fits multiple Black +Decker string trimmer models]: LCC140, GH400, GH500, GH600, GH610, GH900,GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100,CST1200 and more1.[Compatible with Black+ Decker Trimmers]: Designed for use with Black & Decker auto feedstring trimmers, This spool and cover are Black & Decker Spool a perfect replacement 30-foot factory-wound replacement spool features a 0.065-inchdiameter line.2.[ Feed System Replacement]: Eliminatestime spent hand-winding string trimmers, compatible with Black+Decker stringtrimmer and utilizes centrifugal force to feed the trimmer line as it isneeded.3.[Enhanced material]: Premium 0.065-Inchdiameter enhanced nylon line, supports fast cutting and longer lifetime. (Note: OnlySuitable for tender weed grass. Tough and strong weeds please use blades totrim)4.[Packageincluded]: 6 replacement trimmer string spool, 2 replacement spool cap, 2springs When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it