Ryobi RY40201A 40-Volt Lithium-ion Cordless Shaft String Trimmer/Edger - Battery and Charger Not Included Ryobi Cordless Shaft String Trimmer provides Power, Convenience, and safety, inherent of a non-corded outdoor tool Auto-feed String Head for user control Works with ALL Ryobi 40-Volt Lithium-Ion Batteries and Chargers [sold separately] Variable-Speed trigger for optimum control in various conditions Features Premium 0.080 inch twisted single line