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Question 18 / 20 2 Minute Reveal 0%
18

What hand tool makes wrinkly joints at the end of round metal ducts so they slide together?

What hand tool makes wrinkly joints at the end of round metal ducts so they slide together?

Explanation

A 5-blade sheet metal pipe crimper squeezes the rim of round metal duct pipes, producing uniform corrugations (wrinkled ridges) that shrink its diameter. This allows the female and male ends of different pipes to slide cleanly into each other.