One body wedge ( Breaking rock, Breaking concrete )

8-1 One Body Wedge ( O. B. W )

One Body Wedge for Rock, Concrete, Concrete Hammer


This wedge can split Concrete , Granite rock, Garden rock and so on.

Made of special alloy steel, outstandingly durable comparing to conventional Wedge & Feathers.

Integrated parts are easy to set, all parts do not go apart. The parts won’t be lost, and work efficiently increases. Friction on the slide surfaces is small, large hammer is not necessary. It can split stones with a small hammer.

Firstly, drill the hole by HIRADO TH-5 Root Hammer. Secondly, put this [O. B. W] into the hole. Finally, hit the top of OBW with hammer as a wedge principle. 


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