If you need precision you probably already have a micrometer and know how to check these things. Duplicates, inconsistency with holes in index, some sizes missing. Apparently there is no QC where they were made. The seller solved the problem quickly and efficiently. The bits I've used so far work pretty well with plastic. The metal pointer beats the sliding plastic crap.
πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
10 Review
Enhanced Cutting Efficiency with Olson FB23370DB 0 025 2 Inch Blade
10 Review
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
10 Review
πͺ DEWALT DW3984C Portable Blade Set of 3-Pack
10 Review