Wegener also noted that the continents move up and down to maintain equilibrium in a process called isostasy. As an example he cited the sinking of Northern Hemisphere lands under the weight of continental ice sheets in the last ice age, and their rise since the ice melted some 10,000 years ago.
Drill that is fitted with a Pipe provides effective connection to the rig surface equipment or application with the bit and the bottom hole assembly for the purpose of pumping the Drill fluid to the bit.
Don't recommend for use as a drill because the chuck is more suited for use with driver bits as well as the fact this power tool is made for providing torque, not high rotational speed. Pair up with the corded, 3/8. Ridgid drill.