... , CIR90, CIR110, CIR150,CIR170etc,DTH drill bits:60mm-254mm bits with flat face, concave design fit for the atlas copco and ingersoll-rand ... bitsInclude all kinds of round cutter bit and flat cutter bits for excavate coal machine as the replacements of kennametal. Such ... 25mm,30mm,33mm,38mm,etc.8. Blast furnace tap hole drill tools.(Rod, Cross type bits, button bits and X type bits etc) Drill bits