... in concrete,steel,stone 2.variable speed,360 auxiliary handle 3.3 function 4.Full copper motor 32mm Rotary hammer Hammer Drill ... demolition hammer,working in concrete, Wood, stone,Steel YB-8007 Max. drill diameter: 32mm Rated voltage: 220V/110V Rated frequency: ... (Plastic box)/40Ft1. HITACHI Type; 2. Full Copper Motor; 3. Cast Aluminium Housing and AluminiumHandle 4. 360º rotation auxiliary handle ...