Hi Jim,

Always good to hear from you. I source the tubes from Jpscorner or OnFireGuy on eBay. Each tube holds 15 strikes in X43.6mm airtites. The holders and tubes are great for preserving and storing strikes.

I included a link for the tubes and some pics.

https://www.ebay.com/itm/5-Storage-Tubes-for-X-Model-AirTite-Coin-Holder-Capsules-w-Outside-Diam-2-12/371790392128?hash=item56906f2b40:g:rd8AAOSwiDFYK301