US PRO Tools 170 Piece HSS Metric Drill Bits Set 1 - 10mm 2662
HSS for strength and durability. Made of 4241 High Speed Steel (HSS). US PRO Tools 4pc Drill and Countersink Bit Set Quick Change HSS-G 7126. US PRO Tools 7pc Tapered Drill & Adjustable Countersink HSS-G Set 7127.