The Irwin 5mm HSS Cobalt Drill Bit is a commonly used size perfect for general metalworking applications in stainless steel and other high alloys. This popular diameter is ideal for M5 clearance holes, pilot holes for larger drilling operations, and everyday fabrication tasks in demanding materials where performance and reliability are essential. The drill bit body is manufactured from premium HSS steel containing 5% Cobalt, which significantly enhances the red hardness (heat resistance) of the
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