G-MAX 40V 12in Cordless Chainsaw features tool-less chain tensioning for quick adjustments. Automatic oiler applies oil to the bar and chain to ensure durability and extend the life of the chain. The translucent oil tank gives you a clear view of the oil level. The wrap around handle offers multiple cutting positions to provide ease of use when trimming at different angles. Reduced kickback chain for safer cutting. Eliminate the Hassle of Gas and Extension Cords!Powered by innovation, GreenWorks Cordless G-MAX 40V Li-Ion Tools offer a full range of high quality, earth-friendly lawn tools. These tools make life easier with no gas, no cords and zero maintenance, plus the batteries are interchangeable. These G-Max high performance tools deliver fade-free power with no memory loss after charging. GreenWorks G-Max Tools are backed with a 4 year warranty, the lithium-ion batteries are backed with a 2 year warranty, while the DigiPro Brushless Motor is backed with a 10 year warranty.