Hose comes in different thicknesses but you can always take one hose, push it over a Tbody, then measure. However, the clamps have some adjustability so I still think they are the ones to get. BTW, I polished mine on a buffer and they look great. The only issue is they are somewhat of a pain to install because the band is adjustable so it comes apart. You'll see what I mean when you get them. When installing them, especially the first couple, be patient, take your time, and you'll be fine. At that price, get a couple spares just in case.