These white permanent durable ID labels with TrueBlock technology will make ownership of office supplies clear. The TrueBlock Technology completely covers everything underneath, so you can re-identify items with ease. You can customize the labels for just about any use with free templates from Avery Design & Print. Print labels from your laser printer with sharp text and adhere them to paper, glass, plastic, metal and more. And since they resist moisture, scuffing, tearing and smudging, these labels always look good.