This 14mm Irwin HSS TCT drill bit is the largest size in the range, designed for substantial drilling operations in hardened materials. The 14mm diameter is ideal for heavy-duty structural applications, large mounting systems, and industrial fabrication work where you need to create significant holes through hardened steel, cast iron, and bronze alloys. Equipped with a C2 tungsten carbide tip, this drill bit excels at penetrating materials up to 50 Rockwell C hardness, providing reliable perform
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