1.Diamond bits 2.Long working life 3.ISO9001 certificate 4.Good price ... taper) taper rods in most lengths.button bits, cross type bits and chisel bits with(6,7,11,12 degree taper ... CIR65a, CIR90, CIR110, CIR150,CIR170etc,DTH drill bits:60mm-254mm bits with flat face, concave design fit for the ... all kinds of round cutter bit and flat cutter bits for excavate coal machine as the replacements of kennametal ...