High Efficient Down The Hole Drill

1) Single-top, double top, bearing three-supporting structure options that can meet any geological features. 2) Use ordinary motor to driven the rotate, economic, efficient and energy-saving. 3) Promote the use of tanks to improve the strong force, which will help in the deep hole drilling. 4) Unique diamond frame locking mechanism to ensure the drilling angle is accurate, consistent. 5) Turn an ordinary motor power, economy, efficiency, energy saving. 6) Centralized control mechanism, easy to operate. 7) Unique dual silencers, acoustic effects, reducing environmental pollution. The other models as follows: Model Hole diameter(mm) Drilling depth(m)