COMOWARE Cobalt Drill Bit Set (~$36)

Best average finish across mild steel, spring steel, and AR500 armor plating tests, with the highest durability and minimal performance loss as testing progressed.

Beat a $65 Milwaukee set on both speed and durability at roughly half the price per Project Farm's independent testing — a genuinely rare, well-documented result, not a marketing claim. One of only 4 of 13 sets tested that finished drilling through 1/2" AR500 armor plating.