Graphic chart tape: 3 mm/ 012 inch width, 33 m/ 108 feet long for each roll, convenient and enough for you daily useFit for grid creating, you can use these tapes to distinguish things and mark your paper works, line charts, guide lines, blackboard-writings, etc. Ultra thin gridding tapes can also work as craft tapes, such as creating lines on your scrapbooks, journals, paper crafts, designs and so onThese graphic tapes have no paper backing, only adhesive. Goes on easy, comes off clean. Works well on a white board, dry erase board, plastic, glass, paper, wood, metal and ceramic etcMade of PET, durable and self adhesive. Stick to the whiteboard perfectly with strong adhesive. Easy to remove and leave no residue. Perfect for presentation in the classroom and officeMaterial: PETColors: blackPackage Contents:16 * of gridding tapesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.