DEWALT DCST920P1 Brushless Trimmer Brushless Motor maximizing motor efficiency and durability Dual 0.080" line with bump feed, with 13-inch cutting swath Variable trigger with speed control Patented gear drive design. Rpm: 0-4,600 / 0-6,000 rpm Includes 20V MAX 5.0Ah Lithium Ion Battery, along with charger