OVERVIEW The RYOBI 18 in. 40V HP Chainsaw is the perfect combination of power and convenience. This chainsaw has all the power and length of a gas chainsaw with less maintenance. The combination of a 40V 5.0 Ah battery and Brushless Motor deliver the fast cutting speed and torque you would expect from a gas model. This chainsaw features an adjustable automatic oiler, side access chain tensioning and on-board tool storage for the most convenient operation and easy adjustments. The mechanical chain brake is a safety feature on the chainsaw that helps prevent kickback. When the job is complete, store the chainsaw in the durable chainsaw carrying case for easy transportation and storage. The included 40V Rapid Charger, charges your RYOBI 40V batteries 4X faster than the standard charger. The RYOBI Biodegradable Bar and Chain Lubricant allows you to work clean and toxin free. This environmentally friendly lubricant is made from plant-based, biodegradable materials. It contains no petroleum for safe use in all environments. Easily wash away with water for no staining of your pavement and clothing. The lubricant provides ultimate protection for your bar and chain with high heat capacity and reduced wear. The high tack formula helps reduce sling and throw off. The RYOBI Biodegradable Bar and Chain Lubricant is compatible with all chainsaws. The chain has a 0.050 in. gauge, 3/8 in. low profile pitch, 62 drive links and 5/32 in. file size.