Coring Bits

When drilling big, shallow holes in concrete, masonry, or limestone, these hollow core bits fit into suitable rotary hammer drills and need less force than solid drill bits. The drill bits' wear-resistant carbide-tipped teeth cut around the perimeter of a hole and can endure the hammering action of the drills. When starting a hole, each bit has a centering pin that prevents it from shifting or walking. After drilling, these core bits leave a lump of material that must be removed.