WORX WA0004 Grass Trimmer String/Spool Replacement, Dual Line Cordless, 0.065-in

These DNA2 Grass Trimmer Replacement Spools are like using a freshly sharpened knife for the first time. This string absolutely slices through the grass and will make your yard look like a professional landscaping crew stops by every Saturday. The difference is in the patented DoubleHelix design. It’s stronger than other string, but it’s also made to bend and flex when it comes into contact with the hard stuff like the driveway or the porch.