20 sheets round -adhesive label number stickers, 50 pieces for each , sufficient for your Quality -adhesive label number stickers: made of quality -adhesive label , waterproof, weatherproof, and UV resistant signs, fit for both indoor and outdoor . Numbered conveniently: you can the number inventory stickers as numbering system, saving you tons of typing, printing and cutting time, while letting people find the item in the clutter quickly and fast, makes your life much simpler. Easy to : inventory labels are -adhesive and easy to stick or off, white number and black background make easy to be identified, besides, waterproof material is durable for long serving life. Multipurpose number labels: helpful for inventory management, classroom organizations, books, shipping boxes, packaging, great for marking bins, toolbox, hangers and any other products you need to tag; Suitable , office, school, classroom, sports events, parties, convenient for you to recognize and organize things. Wide application: Works great on flat surfaces such as your window, wall, door, providing great visibility from a distance. Colour: black Material: -adhesive Size: whole : 285 x 137mm, sticker size: 2.54cm Package Contents: 20 Sheets x 1 to 50 number stickers Notes: Please clean the substrate to remove any dust, grease, or silicone before applying the sticker. Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.