The Stihl 064 is a professional chainsaw with a 7.1 kg (15.7 lbs.) powerhead, 6.3 horsepower engine, and 85 cc displacement. It features an anti-vibration handlebar system and can handle a variety of bar lengths, with a recommended 24-25 inch bar, but will pull up to 36 inches. Engin specifications : Engine Displacement: 85 cc Engine Power: 6.3 horsepower Weight: 7.1 kg (15.7 lbs.) powerhead only Bar Length: Recom up to 25 inch, will pull up to 36 inch Displacement: 85 cc Configuration: One-pers