Food-safe silicone mold with temperature resistance of -76F to 446F (-60C to 230C). Includes letters A through Z, question mark, exclamation point, slash, left and right parentheses, &, @, smiley face, plus and minus, colon and semi-colon. Letter size 3/4 inch x 3/4 inch x 1/4 inch high (20mm x 20mm x 6mm high). Total volume 4.2 ounces (124 milliliters). Overall size of mold 6-3/4 inch x 11-1/2 inch (72mm x 92mm).