Concrete scarifier is a machine that uses spinning blades, attached to a rotating drum, to chip away at the top layer of a concrete surface. These machines are great for removing coatings and creating a level space, free of bumps and dips. These machines are great for removing coatings and creating a level space, free of bumps and dips. features : power :9 Hp working width :250mm engine :Honda GX270 The machine has one year warranty .