This Parmelee brand pipe wrench is the wrench equivalent of a collet chuck. Unlike ordinary pipe wrenches, it is smooth and grips like a collet. It leaves no mark even on soft copper, but can only be used on a single diameter of pipe. It allows you to exert a lot of turning force on a thin-walled, soft copper pipe without crushing it—something that is impossible with a traditional pipe wrench.
Location: Box 29
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