Solve this multiple-choice question and choose the correct option.

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Twist drill material selection Twist drills are commonly manufactured from which materials? Choose the most accurate option.

Difficulty: Easy

High speed steel
Carbon steel
Stainless steel
Either (a) or (b)

Correct Answer: Either (a) or (b)

Explanation:

FactsTwist drills are widely produced from high speed steel (HSS) for performance and from high-carbon tool steels for economy/low-duty uses. Stainless steel is generally not used as a drill material.

Final AnswerEither (a) or (b)

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