Einhell Petrol lawn mower GC–PM 51/2 S HW is a two stroke Petrol engine mower that is designed for use in lawns and other pastures. It is able to reach up to 20 mph and employs a 2–stroke air–fuel mixture. The Einhell Petrol lawn mower is able to cut through grass with ease and has a fuel efficiency of 35 percent.