The rock auger is perfectly fit for the Kelly drilling in foundation technology, which consisted of the Kelly box, cylinder, bottom plate & door, opening device, wear parts and heavy duty chisel pilot.High material loading capacity.
Suitable for: sand, sand stone, broken rock piece, cobble and etc .
1.Single bottom or double bottom.
2.Single cutting edge or double cutting edge, (cutting edge with chisel normally).
3.With or without collar plate with chisel at side.