Worx Strimmer Spool Lawn Mower with 4 Pcs Spool Lawn Mower & 1 Pcs replacement cap, Strimmer Spool Grass Trimmer Spool Replacement Trimmer Spool Lawn Mower Line Worx Replacement orange4 x grass trimmer spool line, 1 x cordless weed eater replacement string cap cover Compatible with WORX WA0010 High quality nylon thread, flexible and long service life Utilized centrifugal force and aerodynamics to reduce drag and achieve fast cutting, save time from cumbersome manual winding, reduce damage for string trimmer and not get stuck during cutting grass Strong centrifugal force and cutting fast during using, recommend to wear eye