... ,12 degree taper) taper rods in most lengths.button bits, cross type bits and chisel bits with( ... Flat face, drop centre, Normal and retrac body.tungsten carbide(Buttons):Spherical, ballistic and Conical.(Threaded R32, T38, T45 ... straightness.4.Down the hole hammers and DTH button bits(Down The Hole Drilling)Offer ir hammers, ... hole drill tools.(Rod, Cross type bits, button bits and X type bits etc) DTH ...