I have used this bit to drill through concrete block foundation walls in order to feed conduit and wires to exterior outlets. This bit when used in conjunction with a hammerdrill, made the holes needed much faster than a rotary non hammer masonary bit in a non hammer drill.
Bosch bits seem to stand up to tough use better than the B&D/Dewalt bits that I had previously used. The Shank of the bit is reduced down to fit in the chuck of a 1/2 inch hammer drill. So you cannot use this if your hammerdrill has a 3/8 inch chuck. Also, I use this bit in a Ridgid Hammerdrill that is rated for this size bit. Many other brands do not generate enough power or torque to turn this large of a bit, so check the specifications on your hammer drill before using it with this bit or you could risk damaging the tool. I would resist the temptation to try using this bit with a cordless drill for the same reason.
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Product Description:
For use in hammer drills and standard rotary drills. Carbide tipped for maximum wear resistance and capacity to withstand applications in concrete, brick, and masonry. On center diamond tip for fast starts. Slotted tip for faster chip removal. No. HCBG01:
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