Rockhard's carbide-tipped "A" taper shank masonry hammer bits, also referred to as taper shank rotary hammer drill bits are designed to fit into "A" taper chuck adapter which allow carbide tipped "A" taper shank masonry hammer bits to be used with almost any current or discontinued model hammer drill.
The A-Taper hammer drill bits are a high quality build for quick drilling in masonry, rock, concrete, brick and artificial stone, and are designed to be used with heavy duty power tools.