BLACK+DECKER SF-080 Compatible Spool Line Trimmer Spool - Auto Feed Spool Single Line Trimmer Fits GH3000 LST540 String Trimmer Replacement (3-Pack)

Compatible with Black Decker trimmer SF-080 : GH 3000, GH3000R, LST540, LST540B. Spool model: SF-080 / SF-080-BKP. String Trimmer Line Features? Material: High quality nylon. Size: 20ft 0.080 inch. Package includes: 3 x String Trimmer Spool Line Note: When using the product, protective measures should be taken to avoid damage from spilled lines. ONLY Suitable for tender weed grass. Tough and strong weeds please use blades to trim. The difference between automatic winding and manual winding? The automatic winding of the machine minimizes the damage rate of the string trimmer. Manual winding usually cause uneven surface, it make the weed trimmer difficult to work. Irregular interval will make spool get stuck and even cause a spool pop out accident.