I am a retired maintenance pro with years in the trade , The real test of any cutting tool is how it works on Stainless Steel , Stainless can work harden and become vary tough to drill as well as Tap and Dies...
These are what REAL Bottom, Plug, Taper taps look like - This is the PICTURE used in the auction by Walden Specialties - waldenspecs They portend these to be as a Bottom, Plug, Taper taps in the...