?Package Included? 6 packs 30-foot trimmer line; 1 pack replacement spool cap cover(orange); 1 pack spring. ?Saving Effort?Automatically feed the cutting rope with centrifugal force, which make your lawn mowing process more easy. ?Auto Feed Replacement Design? Special design auto Feed System Replacement Spool for Black Decker string trimmer, which eases work of hand-winding spools. ?Premium Material?AF-100 0.065-inch/1.65mm diameter trimmer line replacement spool made of premium material, 6 high-quality spool trimmers ensure a better replacement and longer work time. ?Compatible with Multiple BLACK+DECKER String Trimmer Models?: BESTA510, BESTA512, BEASE620, CST1000, CST1200, CST2000, 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.Date First Available: May 18, 2022. Best Sellers Rank: #156,022 in Patio, Lawn & Garden. Customer Reviews: 4.5 out of 5 stars 70 ratings 4.5 out of 5 stars. : B0B1LDR521. Package Dimensions: 8.74 x 5.98 x 1.61 inches. Item Weight: 11.7 ounces.