Graphic chart tape: 3 mm/ 0.12 inch width, 33 m/ 108 feet long for each roll, convenient and enough daily use Fit 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 , journals, paper crafts, fashion and so on These 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 etc Made of PET, 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 office Material: PET Colors: black Package Contents: 16 x rolls of gridding tapes Only 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.