Male shank adapters are generally better suited for drifting, tunneling &
extension applications where high bending stresses are present.
-Female shank adapters are used when the drilling space is limited and the total
feed length is important (i.e., underground roof bolting).
Two flushing options, internal or external:
-Internal flushing uses a water tube that fits through the centre of the drill and
into an o-ring seal in the end of the shank, to transfer flushing into the drill string.
-External flushing is considered superior to internal flushing as greater volumes
of flushing agent can be delivered with less risk of leakage and hammer damage
from water.