Factory wound for Smooth and reliable operation. Compatible with: CST500, CST800, GE600, ST1000, ST200, ST300, ST3000, ST400, ST4000, ST4400, ST4500, ST5000, ST6500, ST6800 20-foot replacement spool for Black and Decker bump feed string trimmers The black and decker weed eater spool replacement are designed to Black and Decker bump feed string trimmers,easy to install and easy to use. 20ft 0.065 inches line string trimmer replacement spool compatible with Black&Decker original spools models RS-136 / RS-136-BKP / 143684-01.Perfect Weed Eater Replacement Spool for black and decker parts,for black and decker st4500 replacement spool, RS-136 Weed Eater Replacement Spool also know as ST4500 Replacement Spool, Bump Feed Spool, automatic bump feed spool. Compatible with Black & Decker Trimmers : ST100 Type 1,ST100 Type 2 ST200 Type 1,ST200 Type 2 ST1000 Type 1,ST1000 Type 2,ST1000 Type 3 ST3000 Type 1 ST4000 Type 1,ST4000 Type 2,ST4000 Type 3 ST4050 Type 1 ST4500 Type 1,ST4500 Type 2,ST4500 Type 3,ST4500 Type 4 ST5000 Type 1,ST5000 Type 2 ST6500 Type 1 ST6800 Type 1 ST300-BDK Type 1 ST300-BDK Type 2 ST400-BDK Type 1,ST400-BDK Type 2 CST500-BDK Type 1 CST800 Type 1 GE600 Type 1,GE600 Type 2,GE600 Type 3 51312 Type 1 74522 Type 1 82300 Type 2,82300 Type 3,82300 Type 4 82310 Type 1,82310 Type 2 82312 Type 1,82312 Type 2,82312 Type 3 Package includes: 1 x RS-136 String Trimmer Spool Line 1 x Cap Cover 1 x Spring