The Irwin Granite Masonry Drill Bit measuring 10.0mm diameter x 200mm length represents the premium option for the most demanding deep-drilling applications. This combination of substantial diameter and extended reach is specifically designed for heavy-duty through-wall drilling, deep structural fixings, and major installations in granite, concrete and natural stone where both strength and penetration depth are critical. Featuring an extra hard, thicker carbide tip, this 10mm extended-length bit
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