External E Style Retaining Ring: 0.116" Groove Dia, 5/32" Shaft Dia, 1060-1090 Steel, Phosphate Finish MPN:E-15ST PA B100

This versatile 3.5-inch diameter core bit is a professional-grade drilling tool specifically designed for contractors, builders, and home enthusiasts seeking to penetrate masonry materials with relative ease; such as brick, concrete block, granite, or marble walls effortlessly without chipping surrounding areas. Key specifications include its 8-millimeter carbon steel core shank ensuring robust durability capable of withstanding intense pressure from heavier machinery when tackling harder surfaces while reducing risk damaging drill bits. Moreover, the two diamond impregnated teeth cut through denser materials rapidly leaving behind cleaner holes reducing dust buildup maintaining crystal-clear vision during longer projects. This combination contributes to superior performance as compared against conventional steel alternatives within its price range proving why it's become widely popular within both commercial & residential job sites where consistent precise drilling is essential; backed by a lifetime guarantee reflecting company confidence in its performance.