This is what I bought. Ideally they would be 1"shorter for the inside tips. Like I mentioned, it takes some cutting and finagalling to get the inside tips to fit right. Nothing too terrible, probably spent 5 minutes to install the outside tips and 45 minutes monkeying with the inside tips. I used a miter saw with a metal cutting wheel to shorten it, and then a vertical cut to spread the end to make room for the bend in the pipe. Have a piece a wood and a hammer handy to give them a few whacks. You can't shorten these too much because the inside spring clamps are spot welded at the end.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1