This is it. This is all it took to repair the motorhome's muffler. One little 2 1/4'' muffler clamp purchased from Napa Auto Parts for about two and a half bucks. One end of the muffler pipe fits inside the slightly larger exhaust pipe, slap the clamp on, tighten it up and you're done. If I'd known it was going to be this easy I would have done it a month ago!