These ASL alphabet magnetic tiles come as two different sets. The “alphabet” set includes 26 tiles, one for each letter, while the “word builder” set comes with 70 tiles (One of J, K, Q, X, Z; Two of B, C, F, G, H, L, M, P, V, W, Y; Four of D, N, R, S, T, U; Five of A, E, I, O). Each tile is a 1.75 inch square, making it difficult for any young child to swallow. The magnets are embedded within the plastic so that they cannot become loose and become a choking hazard.