The basics Chrome Shredders Deluxe Double Custom Fangs are a set of two single fang caps that fit over 2 teeth and appear to be four fangs. The benefits On-the-spot customizing is fast, easy, and only needs to be done once. The uses Once customized, fangs fit with a unique mold of your tooth inside that allows you to snap them on or off, quickly and easily (no thermoplastic partial plate around adjacent teeth). The bottom line Everything you need is included, no additional utensils and no boiling water necessary.