Concrete Chain Saw Included Chain Force 4 for Cutting Concrete or Ductile Pipe Bar Length 12 in Horsepower 6.4 Engine Type Two Stroke Air Cooled Fuel Type Gas/Oil (50 1 (2 Percent)) Engine Displacement 94 cc RPM 9300 +/- 150 RPM Primary Application - Concrete Chain Saws Cinderblock Vibration 5.62 m/sec Front Handle 5.28 m/sec Rear Handle Fuel Mix Ratio 50 to 1 Fuel Tank Capacity 0.26 gal Noise Level 104.6 dB Tool Weight 21 lb Gas Powered Water Supply 20 psi min