Drill bits are sharp enough to drill through mild steel. I'm not sure how durable they are as I hardly ever use them. The problem with them is that their sizes don't match, and the holes they make are even more different from their markings. The 6mm 6.14mm drill bit drills 6.49mm holes. And that's when I drill the center on the lathe. This is simply unacceptable. I screwed up a part that took over an hour to process. So if you don't mind drilling holes that are within 0.5mm of the drill marks, feel free to buy them. I would suggest looking for something else.
Tool set Stels Tool set, 1/2", 1/4", CrV, plastic case 94 pcs, Stels, 94 pcs, black
45 Review
𧱠Bosch 2607017164 Piece Setter Masonry: Advanced Tools for Precision Masonry Work
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Bit and socket set BOSCH Promoline (2.607.017.322), 26 pcs.
24 Review
Impact screwdriver Makita TD0101F, 230 W
31 Review