ABS Material These mailbox numbers are made of ABS electroplated plastic, which is environmentally friendly, durable, corrosion resistant and waterproof, suitable for outdoor use including rainy conditions. Electroplating & 3D Appearance The surface of these numbers is smooth and attractive due to the metal electroplating process. The angular design and bronze finish give the numbers a stylish and elegant look. Self-Adhesive Design These numbers feature a self-adhesive backing with strong adhesion, allowing easy application to desired surfaces. Wide Application These numbers can be used on most smooth, clean, and dry surfaces such as mailboxes, house doors, offices, streets, classrooms, apartments, hotel rooms, and hospitals for labeling or decorative purposes. Suitable for DIY projects. Package Content This package includes ten digits from 0 to 9, allowing flexible combination and installation as needed for convenient use.