No. 10 International Code of Signal Flag SetNo. 10 International Code of Signal Flags are made of 100% nylon and finished with nylon rope, distance lines and ash toggles. Complete set includes: 26 Alphabet flags, 11 pennants and 3 Substitute flags. The 40 piece sets include a nylon storage bag. Sizes: Flags - 4 x 4 ft, Pennants - 2-2/3 x 6 ft., Substitute - 2-2/3 x 4 ft.