1.Dedicated Honda and Robin gasoline engine for rammers
2.Extra built-in air filter on rammer besides engine
3.Shock-proof rubber  absorbing vibration could comfort the operator
4.HDPE fuel tank with great crrrosion resistance
5.Protective frame for engine from any possible damage
6.Laminated wood inside (plywood) and steel plates outside shoe could well absorb shocks and stess
7.High quality Germen made polyurethane bellow