Wiseman Threading Tools Metric Fine HSS Hand Tap Set ISO529 - M40x2Introducing the Wiseman Threading Tools Metric Fine HSS Hand Tap Set ISO529 M40x2 a precision bundle built for reliable internal threading in metalworking projects. This high speed steel (HSS) ground tap set is engineered for durability, accuracy, and smooth operation in a busy workshop environment. Why this set stands out HSS Ground Taps: Sharp, resilient cutting edges that resist wear and maintain accuracy through multiple threads in steel, brass,