Specification :

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
and diamond core bits, NQ, BQ, PQ, etc and core barrel, reaming shell, fish tools, split tube, etc