1)Portable Grass Trimmer ,139F 2)4-Stoke,1-cylinder,air-cooling, 31cc,<420g/kw.h Portable Grass Trimmer ET255GC4Gasoline Engine 139FType 4-Stoke,1-cylinder,air-coolingBore X stroke 39*26mmDisplacement 31ccMax.Power 1.10kw/7000r/minMax.Torque 1.64Nm/4500r/minFuel Consumption <420g/kw.hCarton Size 147*989cm/36.5*35*48.5cm/pcs20'' 400pcs Portable Grass Trimmer