About this item [TRIMMER & EDGER 2-in-1] Easily converts from a string trimmer to a wheel edger in just seconds [INSTANT LINE FEED] Innovative push button Command Feed spool system for instant line feeding. Plus, Free Spools for Life [DO IT ALL WITH THE SAME BATTERY] Worx Power Share is compatible with all Worx 20v and 40v tools, outdoor power and lifestyle products [BATTERIES INCLUDED] 2 powerful and lightweight 20V Power Share MaxLithium batteries come with this tool and can be used on any other tool in the WORX PowerShare family [2-PACK] Each spool is 10 feet of the patented DoubleHelix DNALINE2, which is an oval-shaped aerodynamic design that makes for cleaner cuts [FLEXIBLE] This string stretches just a little when it hits hard surfaces like concrete or the deck which lessens the impact and makes it last longer [LESS DRAG] That aerodynamic design cuts through the air as well as the grass, putting less strain on the string trimmer’s motor, extending the life of the tool [100 LBS OF TENSILE STRENGTH] This string is strong, too. Older trimmer line was typically only made to handle 68 lbs, and would snap and fray quicker › See more product details