Drilling head M22 for D-20mm Earth Rod

Drilling head M22 Features: Drilling head made from high strength steel alloy, inside thread and thread of ground rod stick together, can effectively protect the ground rod in a deep hurt. Used for ground rod bottom drill deep. Connection is threaded, screw type M22. For use in grounding and lightning systems. Specifications: Material: steel. Rod diameter: 20mm. Thread type: M22. Length: 44mm. Outer diameter: 26mm. Weight: 99g.