Small expander: 1-1/8"to 1-3/4"(29-44mm). Large expander: 2-1/8" to 3-1/2"(54-89mm). 3 x Expander. Easily and Quickly straighten out Clamp dent in mufflers and tailpipes. Simply expand pipes by turning a wrench when repairing or installing tailpipes.
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