Auto Feed System Replacement: It was designed for Black Decker string trimmer. With Auto Feed System Replacement Spool eases the tedious work of hand-winding spools
Cuts Fast and Wearable: Premium AF-100 0.065-inch/1.65mm diameter wearable line, and includes six high-quality spool trimmers for a better replacement and continuous operation
Saving Effort: Automatically feed the cutting rope with centrifugal force, so that you are not so tired during mowing
6+1+1 Accessories: Package contained 6 packs 30-foot trimmer line; 1 pack replacement spool cap cover; 1 pack spring
Compatible with more models: LCC140, GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, CST1000, CST1200, CST2000, MTC220, MTE912, NST2018, NST1118, NST2118, LST220, LST300, LST400, LST420, LST136, LSTE525