Max cutting diameter: 355/405/455mm Engine:1 Cylinder,2 Stroke,air-cooling Displacement: 37.2cc Rated output power/Relevant speed: 1200W/7000rpm Idle speed: 2600r/min Oil/Fuel mixture ratio: 1:25 Fuel tank capacity: 310ml Oil tank capacity: 210ml Chain pitch: 3/8? Gauge: 0.05?