The Irwin Granite Masonry Drill Bit at 12.0mm diameter x 160mm length is designed for major heavy-duty drilling applications. This large diameter is typically used for substantial structural fixings, major bracket systems, heavy-duty rawlplugs, and robust mounting work in granite, concrete and natural stone where maximum strength and load-bearing capacity are paramount. Engineered with an extra hard, thicker carbide tip, this 12mm bit delivers up to 40% more holes than conventional masonry drill bits, providing exceptional value and reliability for professional trade applications. The rounded cutting edges ensure 50% more accurately sized holes per bit, which becomes increasingly critical at this diameter where hole accuracy significantly impacts the performance of large fixings. With a 160mm overall length, this drill bit offers extended reach for deeper installations and through-wall applications, making it an indispensable tool for structural work, major installations, and situations where substantial fixings must be securely anchored in very hard materials. Features and Benefits: • 12.0mm diameter x 160mm length for major structural applications • Drills 40% more holes than conventional bits with robust carbide tip • Rounded cutting edges deliver 50% more accurately sized holes • Designed for impact/percussion drilling in granite, concrete and natural stone • Extended length ideal for substantial fixings and structural installations Specifications: Diameter (mm): 12 Working Length (mm): 105 Overall Length (mm): 160 Pack Qty.: 1