Replacement Spools Models: AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2:Compatible with BLACK+DECKER Weed Eater GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100, CST1200, CST2000, MTC220, MTE912, NST1018, NST1024, NST1118, NST1810, NST2018, NST2118, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522, LST1018, LSTE523, LSTE525, BESTA510, BESTA512, BESTE620 Abrasion Resistant: GOSDENG trimmer string for BLACK+DECKER weed eater is constructed with an upgraded nylon polyamide material that has a tensile strength of over 100 lbs and which is 30% more durable than other brands for longer life. Abrasion Resistant: GOSDENG trimmer string for BLACK+DECKER weed eater is constructed with an upgraded nylon polyamide material that has a tensile strength of over 100 lbs and which is 30% more durable than other brands for longer life. Automatic Feed Spool: GOSDENG replacement spool for Black and Decker weed eater is easy to use , automatically feeds the trimmer by centrifugal force, reducing the tediousness of manually sorting out the replacement trimmer line spool during work. Professional Seller: As a professional GOSDENG brand, we have an excellent after-sales service team and and product quality warranty. Package contains 8 replacement spools for black and decker, 2 spool cap covers of RC100P, 2 spring. 10Pack String Trimmer Replacement Spool Compatible with Black+Decker, 240ft 0.065" AF-100 Autofeed Replacement Spools -8-Line Spool + 2 Cap+2 Spring