Engine:air-cooling,4-stroke, single cylinder gasoline,139F Product SpecificationsCarton Size (cm)G.W/N.W(kg) ... LWHEngine:air-cooling,4-stroke, single cylinder gasoline,139FEngine:Engine:Displacement:31cc3630.5446.5/4.3Engine power: 0 ... : metal blade(3 teeth), nylon head,tools kit,operation manual Gasoline Grass Trimmer