24 individual metal number and symbol HotStamps can be attached to any Walnut Hollow hot tool by screwing on and off with pliers. Used to personalize any project. Hot Stamp on wood, paper, leather, fabric, and more. Set includes Numbers 0-9, Asterisk, Pound, Exclamation, Question, Ampersand, Music Note, Ribbon, Star, Heart, "S" Brand, Comma, Circle, Square, and Tree. Number height is 5/8".