Wiseman Threading Tools Metric HSS Hand Tap Set ISO529 - M42x4.5Wiseman Metric HSS Hand Tap Set ISO 529, M42x4. 5 Engineered to tackle demanding metalworking tasks, this Wiseman hand tap set brings precision threading to the workshop with a robust high speed steel (HSS) ground to exacting standards. Crafted from cobalt infused HSS (M42) for exceptional edge retention, these taps resist wear and maintain consistent thread profiles even after repeated use. The set is uncoated, optimizing cutting performance when