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Introducing Jobber Drill #21 HSS from Chicago-Latrobe - the perfect tool for all your drilling needs! Meeting National Aerospace Specification (NAS) 907 Type B standards, these high-speed steel (HSS) drill bits are designed to provide unmatched precision and durability when drilling stainless steel, aluminum, and other metal surfaces. With a #21 size and decimal equivalent of 0.1590, these jobber length drill bits offer excellent balance for a smooth, accurate performance. The TiN coating ensures maximum resistance to wear and heat, making it perfect for professional and DIY users alike. Whether you're a metalworker, engineer, or hobbyist, the Chicago-Latrobe Jobber Drill #21 HSS delivers superior quality, precision, and durability that won't let you down!