The 26 pc. set consists of A-Z with a 3″ border.
The 40 pc. set consists of A-Z plus an extra A, E, I, L, M, N, O, P, R, S & T, 1 spacer, and 2 end pieces. The pieces interlock to form words. Letter sets can be used with number sets of the same size. Pavement font only up to 36″. Sizes 48″ and up are D.O.T. Highway font. Any other configurations are considered custom.