The JawSaw is the first and only enclosed chainsaw. When not making a cut, the blade retracts back into the blade housing, making this chainsaw one of the safest to use. Guard covers the chain for enhanced safety. Blade housing allows for safe cutting on the ground, unlike conventional chainsaws. Steel teeth hold work in place while cutting stability. Automatic tension features sets the proper tension for you. Also features automatic chain oiler with oil level indicator. Bar length: 6". Maximum cutting capacity: 4". Chain speed: 5.5 m/s (meters per second). Weight: 8.1 lb.