Echo 16 In. adjustable cutting diameter for efficient or aggressive cutting. Brushless motor for superior power and performance. Hi/Lo speed settings for optimized cutting and battery life. Lightweight with cushioned handle grip for greater comfort. Pre-loaded with Echo 0.095 In. Silentwist? line. Speed-Feed? 400 cutting head. Variable speed trigger for ultimate power control. Works with all Echo eFORCEnbsp; 56V batteries and chargers (not included).nbsp; Not compatible with the older Echo 58V products 16 In. Adjustable cutting diameter for efficient or aggressive cutting Variable speed trigger for ultimate power control Hi/Lo speed settings for optimized cutting and battery life Brushless motor for superior power and performance Lightweight with cushioned handle grip for greater comfort Pre-loaded with Echo 0.095 In. Silentwist? line Speed-Feed 400 cutting head