We are the manufacturer of most complete models of DTH hammer and bits in China. It includes: 1) 3.5" hammer, shank : DHD3.5 2) 4" hammer, IR DHD340A / SD4 / COP44 / QL40 shank 3) 5" hammer, IR DHD350R / SD5 / COP54 shank 4) 6" hammer, IR DHD360R / SD6 / COP64 / QL60 shank 5) 8" hammer, IR DHD380 / SD8 / COP84 /QL80 shank 6)10" & 12" hammer, SD10/SD12 shank, Numa120, Numa125 7) above: 15", 18" DTH hammer and bits If[...]

We can provide high quality NQ, HQ, BQ, AQ diamond core bits and reaming shell. ALso we can provide core barrel, etc[...]