EGO Power+ ST1520S 15-Inch String Trimmer with POWERLOAD and Carbon Fiber Split Shaft Battery and Charger Not IncludedThe worlds first String Trimmer with POWERLOAD Technology. This patent pending technology solves for one of the biggest pain points of string trimmers, POWERLOAD technology automatically winds your trimmer. Replacing your string line is as easy as feeding the line into the head and pressing a button! The EGO POWER+ 15 POWERLOAD String Trimmer has a Carbon Fiber shaft that is stronger than any other string trimmer shaft on the market today. The shaft is equipped with a lifetime warranty so the strength and durability is guaranteed to last forever! This revolutionary trimmer is also built with a hi-efficiency brushless motor, bump feed line advance, .095 professional cutting line, and is compatible with all EGO ARC Lithium batteries to maximize the convenience of cordless and deliver Power Beyond Belief.POWERLOAD Head, load your line, push a button and goCarbon Fiber Shaft with a Lifetime Warranty15 cutting swathDual-feed spiral twist 0.095in. lineHigh-efficiency brushless motorVariable speed control5-year limited warrantyProduct informationBrandEGO Power+Power SourceBattery PoweredColorGrey/BlackItem Weight7.43 PoundsCutting Width15Product Dimensions71.7L x 12.6WAssembly RequiredYesUPC692042008252 692042008184Item Weight7.43 poundsManufacturerEGO Power+Item model numberST1520SBatteriesLithium Ion batteries required.