Features: Easily into Trimmer:It's as simple as snapping the spool into the grass trimmer.Professional factory pre-wound wire, automatic feed,which can offer the best reliability and quickest setup.Professional CNC winding spool: Compatible with Black and Deacker spools by the CNC machine cutting and winding, automatic line change. Manual winding is cumbersome and can easily get stuck during use, which can cause damage to the string trimmer.Precautions for use : Wear eye protection and long pants when using this product to avoid injury caused by spilled lines. The product is only suitable for young grasses. For strong weeds, use other tools such as blades to trim.Rugged material: High-quality spool & durable nylon thread, flexible and long service life. Aerodynamic shape allows less drag for more efficient cuts.100% brand new and high qualityNylon rope specification: 1.65mmConsumption of transparent round spool: 30ft/9.144mAlternative spool model: -100 / -100-bkp / -100-3zpReplacement cover model: rc-100-pApplicable to black and Decker series mowersSpool Specification:Compatible with string trimmer, Premium 30ft 0.065 inches trimmer line replacement spool for spools models Black & Decker -100, -100-3ZP, 100, -100-2, -100-BKP, -100-BKP 1, AFS 100.Spool cap covers models:RC-100-P.Compatible models:AF100 spool compatible with Black and Decker models: GH400, GH500, GH600, GH610, GH900, GH912, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522, LST1018, LSTE522, LSTE523, LSTE525, NST1018, NST1024, NST1118, NST1810, NST2018, NST2118, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000,BESTA510, BESTA512, BEASE620, CST1000, CST1200, CST2000.color:Photo colorMaterial:nylonPackage Contents:8 x replacement weed wacker string line spool1 x replacement spool cap coversOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.