... clayed soil.Main Features(Tamper 80A):1.Our tamping rammer is with advanced design, stable performance, strong tamping force, easy operation ... System, which can purify the air over 99%of dust and prolong the engine life;3.Dust off corrugated box(Bellow), the ... bellows stronger avoid breaking down suddenly.4. Crankcase, which is made of aluminum alloy.5.Oil Pointer, which can avoid excessive fueling ...