Airstop Tubes

Been reading through other threads, and I'm intrigued by the Airstop tubes. Looking at Spruce's catalogue, I don't see tube sizes "exactly" as they're labeled in the RV-10 plans. (We don't have ours on the gear yet.) Wondering what size to order from Spruce if we end up going with the Airstop tubes.

TIA.

Jeff

If you haven't gotten the finish kit yet it should come with airstrip tubes as they have been out for a few years now.