Flat ground to 118 degrees for increased durability and higher turning rates
C2 carbide construction keeps bits sharp and extends their lifespan
Chrome vanadium shanks provide superior durability compared to HSS steel
Large flute capacity minimizes clogging and allows easier debris removal
High temperature tip braising enables drilling through hard materials like concrete and rebar
Summarized by Shop
INDIVIDUAL MULTI-PURPOSE DRILL BITS
Perfect for expert users (mechanics, contractors, metal workers, farmers, etc.) and home users who want a tough job done right.
Millner-Haufen multi-purpose bits work well with a variety of materials, so you don’t have to buy a different bit for each job. Effective on: hardened steel, cast iron, concr
Ise bit to drill hole for replacement of trailer decking. Broke the end off after about 8 holes. Got to send it back for warranty. Frustrating. My
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Frankie · June 27, 2026
Bought 2 3/16 bits to go through a 5/8” i beam and made it through maybe 2 times per bit than just was utterly useless. I saw the ads and had high hopes but dont even compare to the milwaukee or dewault metal bits.