The 18mm Irwin Blue Groove Power wood drill bit is designed for drilling larger diameter holes required for substantial pipe work, cable bundles and heavy-duty fixtures. This size is particularly popular amongst plumbers and electricians working on commercial and domestic installations. This 18mm bit showcases IRWIN's groundbreaking bi-metal technology, making it the world's first wood drill bit that can reliably cut through nail-embedded wood without locking or breaking. The bi-metal construction combines a high-speed steel edge that provides exceptional durability and nail-cutting capability, with a carbon steel body that ensures flexibility and prevents catastrophic failure. Equipped with a self-feeding tip that pulls the bit through materials with minimal resistance, plus three precision cutting edges for enhanced chip removal, this 18mm variant delivers fast, clean holes every time. It's particularly suited to installing larger diameter pipes and substantial cable runs through joists and studs. Features and Benefits: • 18mm diameter for larger pipe work and cable installations • Revolutionary bi-metal technology for unmatched durability • Cuts through nails without locking or breaking • High-speed steel edge provides nail cutting capability • Carbon steel body ensures flexibility under stress • Self-feeding tip for effortless drilling • Three cutting edges deliver clean, fast holes Specifications: Diameter (mm): 18 Overall Length (mm): 157 Pack Qty.: 1 Size: 18 mm

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