Package includes: 5 sets of reflective mailbox numbers, It includes 3" numbers 3 set, 4" numbers 2 set, each set contains 10 numbers, from 0 to 9, 50 numbers in total Thin die cut reflective numbers give the appearance of being expertly painted, make your house can be easily found by friends or post man, driver. Numbers Will Reflect At Night When Light Hits Them (The reflection effect depends on the brightness of the light) The decals have a 5-7 year life expectancy and are resistant to cracking, fading or peeling. They can be used for outdoor or indoor use and will adhere to any smooth non-porous material Applications: these 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