DH99 Drills

DH99 Drills are a series of 4 inch (102mm) bore drifter drills for general mining, tunneling, and construction work The DH99 drill can be mounted on Screw Feed Aluminum Guide Shells for drifter or long-hole drilling

The main design construction features many options:

  • Backheads for remote control automated drilling
  • Threaded exhaust ports for noise control equipment
  • Chuck end parts for 1 1/4″ round tangential shanks
  • Chuck end parts for 1 1/4″ lyner style lugs
  • Rotation directional controls


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