Consists of 4 each of numbers 1, 2, 3 & 4 plus 3 each of numbers 5, 6, 7, 8 , 9 and 0 together with 1 of each letter E, P, R, S, T, W, X, Y & Z and 2 Full Blanks & 2 Half Blanks. This set is sufficient to display any Emergency Action Code (EAC) and UN substance identification number in The Approved List. To fully equip 1 vehicle to be able to display any Hazchem code you would need 3 sets.