These MasterVision interchangeable characters are a versatile solution that can be used with MasterVision letter boards. With over 270 letters & characters, your messages can be clear & communicate thoroughly. Adding, repositioning, & removing can be quite enjoyable for most people. Character Types: Letters; Math / Money Symbols; Numbers; Punctuation / Language Symbols; Character Style: Uppercase; Character Mounting Type: Letter Board Inserts; Number of Pieces: 270.