The Hyper Tough 20-Volt 12 Brushless Chainsaw provides you with the power to complete most yard tasks! The brushless motor offers longer run time and increased motor life. The 12 bar and chain go through even the toughest wood quickly and easily. Tool-less chain tensioning provides for easy adjustments so you don t lose time completing tasks. The included 20V 4.0 Ah battery and charger are compatible with all Hyper Tough 20-volt Max tools. When you are ready to make repairs or tackle home-improvement projects Hyper Tough is ready.