The numbers can be applied to any smooth, clean and dry surface, can be applied as a mark or sign for mailbox or door or streets, outdoor billboard phone number, car body decoration number and so on. House numbers can be used as front door numbers, mailbox post numbers, apartment or condo numbers, can be applied for yard, outside, garden, offices, hotels, factories, street address plaque, etc. No tools are required for installation, because our self-adhesive door numbers with 3M strong glue strips on the backside. Just peel off the sticker and press it on the place you want. House number are made of high-quality industrial ABS, these numbers are sturdy and lightweight, with the same texture and craftsmanship as the car body logo. Each house number, with their unique arc design, show perfect curvature on their surface, make your house different and show the beauty of modernism.