RC-100-P Spool Cap protects spring trimmer line fixed spool, prevent weeds from getting stuck inside, avoid damage to the trimmer. Spool Cap model: RC-100-P / RC100P / RC 100 P, replace part #: 385022-03. RC100P Spool Cap Compatible with black and decker trimmers: GH400, GH500, GH600, GH610, GH900, GH912, BESTA510, BESTA512, BEASE620, CST1000, CST1200, CST2000, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522 Trimmer spool cap works with black decker grasshog parts, perfect replacement spool cap, grass trimmer parts, cordless trimmer parts, Bump Cover Cap AFS, electric weed eater parts, weed wacker replacement parts, gh900 spool cap, gh900 parts, gh900 cover Turn off the trimmer before changing, installing, or removing the spool Compatible with Black Decker LST1018, LSTE522, LSTE523, LSTE525, NST1018, NST1024, NST1118, NST1810, NST2018, NST2118, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000. THTEN RC-100-P AF-100 Trimmer Line Cap Spring RC100P,385022-03 Compatible with Black and Decker Weed Eater Cover,Weed Wacker Caps Grass Trimmer Parts for AFS Trimmer (4 Cap, 4 Spring)