Extension drill rods
  • Shipping Port :Xiamen port
  • origin:China
  • Packing :In Bundles
Product details

Extension dril rods are made by hollow drill steels, different lengths are available from 600mm to 6400mm. This hollow hole are usually named flushing hole, used for transimitting water or air during drilling. And the threads can be used for connecting couplings, shanks adapters or bits.

Extension dril rods