Grizzly T25213 - 18-Pc. UNF HSS Tap & Drill Set

T25213 18-Piece UNF HSS Tap and Drill Set A fine threading tap and drill set. This HSS National Fine Thread Tap and Drill Set features 9 fine tap sizes with the appropriately matched drill sizes. Whether cleaning out old threads or cutting new, the nine drill bits will clear a hole in metal. The nine corresponding tap sizes will cut fine threads into that freshly drilled hole. The taps and bits are nestled side by side with their respective sizes displayed in the steel index. HSS (high-speed steel) has been heat treated for hardness and