I took these right out of my bag and used them on hard metal that I couldn't thread with a traditional tap and die set. It worked great on the first try. I only took off the star because the bits were loose in the case when they arrived and since the metric and standard bits are almost identical in some sizes I have no idea which bit is which. However, it's okay.
πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
10 Review
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
10 Review
High-Performance Bosch BS80 6W Bandsaw - 80 Inch 4 Inch Blades
11 Review
Enhanced Cutting Efficiency with Olson FB23370DB 0 025 2 Inch Blade
10 Review