Gordon Hambach, Product Line Manager Power Demolition Tools. “Our drum cutters are a complementary product to our hydraulic breakers and offer an additional solution for softer rock applications up to 100 Mpa”. They can be used underwater to a depth of 30 m without additional installation. Small grain sizes mean cut rock or concrete can be used as backfill material without additional crushing. Low noise and vibration levels make the new range suitable for use on restricted job sites and in sensitive areas. The drum cutting technology used allows accurate removal of material in tunnels and trenches, and from any other kind of rock or concrete surface.