The Irwin Granite Masonry Drill Bit measuring 14.0mm diameter x 160mm length represents heavy-duty drilling capability for the largest fixing applications. This substantial diameter is used for major structural fixings, large bracket systems, heavy-duty anchor installations, and the most robust mounting work in granite, concrete and natural stone where ultimate strength and holding power are essential. Featuring an extra hard, thicker carbide tip, this 14mm bit can drill up to 40% more holes tha
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