WORX WG913.51 3-Piece 18 Volt Lithium-Ion Cordless Combo Kit With Blower, String Trimmer & Hedge Trimmer Lithium-ion battery technology for long life, no self-discharge PowerShare technology lets you use the same battery for any WORX 18 volt lithium-ion cordless tool WG151 String Trimmer/Edger: Converts from trimmer to edger in seconds WG251 Hedge Trimmer: Dual action blades for reduced vibration WG540 Blower/Sweeper: 120 MPH air speed to clean up large areas