Dry Core Drill Bit - 3"X4" Short Tube (10/box)

This bit was specially designed for masonry, and concrete block. Tested over a period of 2 years to give you: Up to 300 holes in 1500psi block. Up to 125 holes in 200psi block.  Pointed V segments for easy start. For use on grinders or core drill rigs without percussion. Laser welded diamond segments to perform under extreme heat and cutting pressure. This core drill bit is ideal for dry cutting and provides perfect drilling action. It can fit on an angle grinder tightly and rightly.