5 pack of standard Bison tubes with o-ring to keep your log sheet dry. Each bison tube comes with a Rite in the Rain® log sheet included.
Colors & metal rings may vary from the ones that are pictured.
Recommended replacement Rite in the Rain® log sheets:
1" x 11" 8 Pack
https://spacecoastgeostore.com/products/rite-in-the-rain-log-sheets?variant=19488898842742