This Trodat® Custom Printing Set prints up to 21 letters per line, 3 mm (??"). Includes an additional set of 264, 4 mm (????") characters (prints up to 17 letter per line). Do-it-yourself stamp kit offers an easy way to quickly set and print any required text. Each kit set includes self-inking stamp, tweezers, stamp pad, type holders and individual rubber letters, numbers and signs. Contains a minimum of 65% post-consumer recycled material. Lifetime warranty on mechanism. Text plate size: 47 x 18 mm.