Compatibility: (Tips: Press “Ctrl + F” to quickly find the model you need) Suitable for multiple trimmer models: LCC140, GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100, CST1200, CST2000, MTC220, MTE912, NST1018, NST1024, NST2018, NST1118, NST2118, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST136, LST522, LST1018, LST523, LST525, BESTA510, BESTA512, BESTE620 Product Description: Compatible with Black + Decker Trimmers: Designed for Black Decker trimmers with automatic line feed, the 30-foot replacement spool is factory pre-loaded with .065″ diameter line. Automatic Feed System Replacement: Eliminates the time spent manually rewinding line, compatible with Black + Decker trimmers and uses centrifugal force to feed trimmer line as needed. Improved Material: High-quality improved .065″ diameter nylon line, provides fast cutting and longer life. (Note: Only suitable for delicate weeds. Please use the blades to trim tough and strong weeds) The package includes: 8 x Replacement Spools of Trimmer Line, 2 x Replacement Spool Caps, 2 x Springs. Instruction Manual (As the picture, please contact us if you receive the product with missing parts). Note: Please make sure the model and appearance of your equipment are exactly the same as our products. It is the customer’s responsibility to purchase the right products. If you are not sure, please contact us in time. Thank you for your cooperation.