Poulan Pro PPB40PS, 40-Volt 8 in. Cordless Pole Saw Featuring an 8 in. Bar and Chain that has a self tension mechanism which adjusts the tension in the cutting chain so that it neither binds on nor comes loose from the guide bar Extends up to 8 ft. giving you the extra reach without having to use a ladder Automatic Oiler keeps your chain lubricated at all times. Easily monitor the oil level with the Oiler Level Indicator window Front Adjust chain Tensioning system for quick tightening of the chain Instant start allows you to fire up the pole saw by simply pressing a button