●Sizes 1.1/8 to 3.5 inch ●Drop Forged Heat Treated Steel ●Easily Straighten out clamp dent in mufflers and tailpipes ●Simple Wrench Turn Expands Pipe For Repair ●Works With all 1.1/8 - 3.5 inch Thin Walls ●Small Expander 1.1/8 - 1.75 inch ●Medium Expander 1.5 - 2.5 inch