18 Aluminum Pipe Wrench

aluminum pipe
Manufactured with the same dimensions as steel pipe, it weighs only one-third as much. On the other hand, it is only one-third as stiff as steel pipe. Temper is lost at welded joints.

wrench
Pull or twist (someone or something) suddenly and violently
Turn (something, esp. a nut or bolt) with a wrench
twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates; "wrench a window off its hinges"; "wrench oneself free from somebody's grip"; "a deep sigh was wrenched from his chest"
make a sudden twisting motion
a sharp strain on muscles or ligaments; "the wrench to his knee occurred as he fell"; "he was sidelined with a hamstring pull"
Injure (a part of the body) as a result of a sudden twisting movement

18
eighteen: being one more than seventeen
eighteen: the cardinal number that is the sum of seventeen and one
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