No. 0 International Code of Signal Flag SetNo. 0 International Code of Signal Flags are made of 100% nylon and finished with nylon rope, distance lines and ash toggles. The complete set includes 26 alphabet flags, 11 pennants and 2 substitute flags. The 40 piece sets include a nylon storage bag. Sizes: Flags - 1 x 1-1/4 ft, Pennants - 2/3 x 2 ft, Substitutes - 2/3 x 1-1/3 ft.