I recently sized up to 12mm. But I can't chain the 12mm, 00g, and 0g because the 12mm is too thick and completely fills up the 00g! So I decided to chain together all my CBRs, and a bunch of the circular barbell rings together to see how many I could connect up. Its a bit of a mess, but wow...
The largest diameter for extra weight and the largest balls I could find for this 00g beast. Looking forward to wearing this to the beach, or freeballing with some short shorts!