0: Zero
Individual Nautical Code Signals are available in a variety of sizes and three attachment options; Ash Toggle, Brass Snaps and Rings and Brass Grommets.
Brass Grommets and Brass Snaps and Rings are available in sizes 0, 2, 3, 7, 10 and 14. Ash Toggle flags are available in sizes 0, 2, 3, 7 and 10.