Our Alphabet Sets come in two styles: with the Stencil-Fast interlocking System and without interlock.
The Stencil-Fast interlock has vertical permanently attached velcro on each side of the letter, to allow for fast change of letters without having to reset the words each time.
All the letters in sets may be substituted, one for one, except for the end pieces. You can order the sets with the letter assortments we provide, or you can order your set of 29 or 39 pieces with any combination of letters you choose. Please specify the letter substitutions you require when ordering the set.