Yuri Speed 18 Inch 2600W Gasoline Chain Saw 450Mm Ys-Cs-58-18. Rated Output Power: 2600W; Displacement: 58cc; Engine Type: Air Cooling Single Cylinder, Two Stroke; No-Load Speed: 2800Rpm; Two-Cycle Oil/Gasoline Mixing Ratio: 1:25; Fuel Tank Capacity: 550ml; Engine Oil Tank Capacity: 260ml; Guide Bar Length: 18″ (450mm); Max Cutting Diameter: 450mm