Made for ambitious homeowners with challenging tree maintenance. High-efficiency Brushless 2.0 motor extends runtime. Reduced-Kickback Bar Nose - easier to use for extended periods of time. Tool-less chain tensioning and Automatic chain oiler. Aluminum drive cover for increased durability. Professional-level performance without the noise and fumes. 18" Bar length. 3/8" LP chain pitch. Chain speed: 24 meters/second 78.7 feet/second. Includes: 2.5Ah Lithium-ion battery. 3A Battery charger.