... Diesel MotorWorking Width, 200mm Working Depth, 0-3mm Adjustable; Scarifier Machine Features:1) Used for scarifying, roughening, planning, leveling, smoothing, ... coatings, and to clean and prepares concrete surfaces prior to coating, re-coating, and floor covering installation Rugged sand casting and heavy ... be controlled3) Can be changed various kinds of milling cutters.Machine color can be choosed.