All saws sent out with mixed gas, extra chain, and wrench. Chain and Bar oil is required, and available for sale. 10″ Bar Pole Saw: Standard Length 7′ 4-1/2″ Extented Length 11′ 3″ 22.8cc Power Boost Tornado Engine 10″ bar 12″ Bar Pole Saw: Standard Length 8′ 11″ Extented Length 12′ 2″ Air Cooled 25.4cc Engine 12″ Bar 18.5 lbs 50:1 Ratio Mix Fuel Auto Oiling System