Create 3-D USCG-legal registration numbers that stand out in bold relief against your boat s hull. Kits include two-part polyurethane resin, plus four letter sets of A-Z and four number sets of 0-9 for a total of 144 letters and numbers. Finished, raised, professional-grade letters are easy to create just dispense the resin, cure and apply letters to your boat s hull. Kits also include two-part, double syringe and Sticker-On! product for secure letter adhesion.