The Irwin Step Drill Bit with 5mm - 13mm capacity offers an impressive 13 hole sizes, providing exceptional versatility for precision work. This comprehensive bit extends from 5mm through to 35mm, making it particularly suitable for larger sheet metal applications and installations requiring a broad range of hole diameters in a single tool. Engineered for precise drilling in thin materials, this step drill features a single flute for maximum drilling control into sheet metal. The unique flute de
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