Poulan Pro 966807601. . Features: 20 in. bar and chain easily cuts through heavier duty materials. Automatic chain oiler keeps the chain running smooth. Effortless recoil starting system for easier unit start up. Vibration reducing handle decreases operation fatigue. Super Clean air filtration system keeps engine running like new. Rear handle design makes it ideal for both overhead jobs as well as standard cutting operations. DuraLife chromium plated cylinder extends engine life with added strength and durability.