The EGO 15" String Trimmer, Power Head, 5.0Ah ARC Lithium™ Battery and 56 Volt Charger are part of the EGO POWER+ Multi-Head System. Equipped with the Rapid Reload head to make reloading line quick and easy. The 15-inch cutting swath, bump head line advancement and professional grade 0.095" cutting line makes completing yard work a breeze. The EGO POWER+ Multi-Head attachments are designed specifically for your EGO Power Head. The advanced EGO POWER+ 56-Volt 5.0Ah battery uses industry-leading ARC Lithium™ technology to deliver Power Beyond Belief™ and is compatible with all EGO POWER+ Products.