►Advantage:
1. HF-4+ core drill is mainly adapted to suit mineral with diamond bit or tungsten-carbide tipped bit.
2. It can also be used for engineering geology and ground water exploration and shallow layer oil and natural gas exploration,even hole for sap ventilation and sap drain.
3. The drill has compact,simple and suitable construction.It is light ,and can be assembled and disassembled conveniently.