Rotary Hammer Drill 1.work in concrete,steel,stone 2.variable speed,360 auxiliary handle 3.3 function 4.Full copper motor 32mm Rotary hammer Hammer Drill,electric hammer1.Three function:hammer,rotation,hammer and rotation2.Variable speed with Powerful motor demolition hammer,working in concrete, Wood, stone,Steel YB-8007 Max. drill diameter: 32mm Rated voltage: 220V/110V Rated frequency: 50/60hz ...