Silky New Professional Series 179-39 Telescopic Landscaping Pole Saw HAYAUCHI 390, 21-Feet New Silky Professional Series Telescopic Landscaping Pole 3-extension 4-poles/sections telescoping pole saw model that extends to 21 feet Extension range is 8 feet to 21-feet (2,440 to 6,300 mm); maximum working reach is 26 feet Blade thickness: 1.5 mm. 5.5 teeth per inch (6.5 teeth per 30mm) teeth configuration. Sk4 high carbon steel metal 6.9 pounds (3,140 grams) operating weight; 7.35 pounds (3,340 grams) weight with blade cover. Material : Aluminum, Rubber Product applications include pruning & trimming, arborist & forestry, lawn & garden. Clean the saw blade periodically with a solvent to remove tree residue. This will prolong the life of the blade