Designed for aggressive cutting and ultimate control, the RYOBI 20 in. 46cc Gas Chainsaw features a large 20 in. bar and chain with an automatic oiler for smooth, uninterrupted operation. The 46cc 2-cycle engine provides reliable performance time after time, while the anti-vibe handle reduces fatigue to help you get the job done fast. In addition, the side-access chain tensioning and replacement make adjustments quick and easy to accommodate the task at hand.