1. Compatible: AF-100 lawnmower spools compatible with Black+Decker weed cutter BESTA510, BESTA512, BEASE620, CST1000, CST1200, CST2000, GH400, GH500, GH600, GH610, GH900, GH. 912, lst120, lst136, lst140 compatible, lst201, lst220, lst300, lst400, lst420, lst522, lst1018, lst522, lst523, lst525, nst1018, nst1024, nnst11118, nst1810, NST2018, NST2118, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000 Alternative coil models: AF-100, AF-100-3ZP, AF-100-BKP
2. Material: The AF-100 lawn mower spool is made of an improved nylon polyamide material, which is flexible and elastic, with a tensile strength of over 100 lbs. For stretching and cushioning hard surfaces, and is 30% more durable and lasts longer than other brands
3. Easy installation: the trimmer automatically retracts by the centrifugal force, so that the spool no longer needs to be manually cleaned up to replace the trimmer. Simply thread the line through the hole, slide the spool down, insert the spool into the bottom slot, close the cap and press until it snaps into place
4. Box contents: 8 packs of 30 ft 0.065 inch diameter trimmer line and 2 replacement spool covers are included in the package
5.100% Satisfaction Service: If you have any questions, please contact us by email. We will solve it for you the first time