Why Olaine attach sticky tab on all mailbox numbers? ?Visible and reflective at night?: With premium reflective vinyl material, these number stickers will shine bright when light hits them, even during haze and rainstorms. The reflection is bright and easy to spot in the dark. Let you, your friends, neighbor, postman, delivery driver, and emergency secure to find your house without effort. ?Easy installation with sticky tab pre-cut?: Not only are this numbers for mailbox can be easy to separate the backing with our exclusive sticky tab, but each number is pre-cut for you to install effortlessly in minutes. All mailbox numbers reflective come with detailed instructions. If you have any questions please contact us, we will reply within 24 hours. ?Durable adhesion outside use?:Resists cracking in cold weather, rain and extreme heat! Made with engineer-grade vinyl, these reflective mailbox numbers are stronger than the packing tape. We have also adapted high quality Clear PET Backing which can protect well against the adhesive rather than the usual paper backing to ensure numbers firmly stick on your mailbox once placing. ?Enough for duplicate numbers with 50 numbers?: Our mailbox number stickers includes 5 sets total with each set containing 10 numbers, from 0 to 9. It also includes a squeegee/ scrapper and masking tape. Unlike others, our bonus masking tape is high quality, which can easily be torn by hand and will not leave residue. With our product, theres no need to spend extra to buy a roll of tape or find another tool to squeeze the decals. ?Apply on any smooth dry surface?: These house numbers for mailbox can be applied to any smooth, clean, and dry surface. Surfaces such as metal, plastics, walls, ceramics, glass, etc. It can be applied as a sign for mailbox, house address, trash, storage cabinet, business window, outdoor billboard phone number, car body decoration number, or anything else you can imagine.