Need to mark USDOT numbers on trucks or vehicles? Or maybe just need some sturdy numbers for mailboxes, boats, or race cars? This pack from J.J. Keller has you covered. You get 50 stickers of the number 7, each measuring 3.5 inches tall (the actual decal is about 2-1/8\\\ x 4\\\). They're printed in black on clear vinyl with a permanent adhesive backing, so they stick well indoors or out. These are officially designed to help you comply with DOT hazmat ID number marking requirements – just apply them to blank placards or directly on your vehicle. But they're super versatile! Use them for house numbers, workshop organization, sports teams, you name it. J.J. Keller is a trusted name in compliance and safety products, so you know these are durable and made to last. One less thing to worry about!