Greenworks 12-Inch 40V Cordless Chainsaw, Battery Not Included 20292 G-MAX 40V Li-Ion Battery System powers multiple tools for complete yard system-Battery and Charger sold separately 12-Inch Oregon bar and chain, perfect for cutting branches and limbs with ease Tool-less chain tensioning for quick adjustments so you can get back to the task at hand Automatic oiler applies oil to the bar and chain to ensure durability and extend the life of the chain Translucent oil tank for clear view of oil level. Note: No Oil Included