EFFICIENT OPTION!👌 A translucent oil tank allows a clear view of the oil level. An automatic oiler delivers oil to the bar and chain to maintain durability and optimal usage. The 8-inch power head attachment is part of the Greenworks 40-volt cordless system. The Greenworks 8-Inch 40V Pole Saw Attachment is the best professional manual pole saw on the market. It features a translucent oil tank that allows you to see the oil level and an automatic oiler that delivers oil to the bar and chain to maintain durability. Technical Features: 1. 8-inch power head attachment for a pole saw 2. Chain tensioning system with simple adjustments PROS🟢 Immediately tighten the chain Genuine replacement component for Greenworks CONS🔴 Not the cheapest top-notch pole