Kit includes a complete set of NFPA diamond, digits and NFPA symbols: (25) Blank Placards (NFPA Diamonds), Numbers = (3) each of 0, 1, 2, 3, 4, Symbols = (2) Use No Water, (1) Radiation, (2) Oxy, (1) Acid, (1) Cor, (1) Alk. All Material is Pressure Sensitive Vinyl that provides superior tear-proof strength protects against water, chemicals, and weather, UV-resistant. Easily wipe off dirt, dust or grease. The adhesive is High tack acrylic adhesive, which bonds permanently to tanks, drums, siding, or doors. Complies to NFPA 704.EHS GURU