Cars Simplified: Everything Automotive Explained

Drill Bits

Drill bits are used to make holes in a piece of material by removing material in a spiral cutting motion. General purpose and specialty drill bits are available, and as a whole, cut through a wide range of material. The type of material the drill bit is made out of, coated in, and some geometry factors will all come together to determine what sort of material it is designed to cut through.

Drill Bit Sets

BrandProduct Number
(Affiliate Link)
Piece
Count
COOMaterial
Amazon Basics100Steel
Astro Tools21High Speed Steel
Astro Tools29High Speed Steel
Bosch91ChinaHigh Speed Steel
Bosch91ChinaHigh Speed Steel
Craftsman14Gold Oxide Coating
DeWalt21Titanium Nitride Coating
Drill America29Cobalt
Drill Hog29Cobalt M42
Drill Hog115Cobalt M42 Steel
KnKut15United StatesHigh Carbon Steel
KnKut29United StatesHigh Speed Steel
KnKut29United StatesHigh Speed Steel
Makita14Titanium
Makita71High Speed Steel
Makita75High Speed Steel

Basics of Drill Selection by

In this video, manufacturing engineer Andrew Harnett guides you through the basics of selecting the ideal twist drill.