Metal Demon™ Drill Bit for Mild, Hardened and Stainless Steels, 5/16

Metal Demon™ Drill Bit for Mild, Hardened and Stainless Steels, 5/16", 3" Flute, 130° Point

Marsoni

M251S

$17.55

Get it in 3 business days with 1 day shipping. Friday, May 29

Metal Demon™ Drill Bit for Mild, Hardened and Stainless Steels, 5/16", 3" Flute, 130° Point3 in 1 bit solution creates fast clean holes in all metal applications, eliminating the need to carry multiple bit types (Titanium, Cobalt, or Black Oxide) Up to 30x longer life than standard Titanium, Cobalt, and Black Oxide drill bits Thermal Shield Protective Coating protects the tip against heat, increasing bit life and maximizing bit durability Cutting Edge automated precision CNC grinding process allows the bits to slice through all metal types

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Exchange/Return Notes

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So the quality of this not great, but good enough and they look nice enough on the wall. However, the bracket holes are not spaced at 16" intervals. WTF? I'm not sure who designed this thing. The molly plugs that came with it look OK, but to play it safe I used a cobalt steel drill bit and made my own holes in the bracket. Easy enough with some wd40. My other pick with this is that the screws to anchor the shelf to the bracket are black and and very obvious... they should have supplied some kind of cap.

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Reviewed in the United States on January 31, 2026