This Self Adhesive Gridding Tape is a useful and convenient low profile thin tape, for creating any form of grid, table or guide lines on a whiteboard.It is Ideal for creating educational whiteboards such as music staves, literacy lines and even sports boards. It easily converts your standard whiteboard into a planning board, a progress board, an In-Out board or simply use to section off area's for different topics, departments or functions. Ultra-thin gridding tapes can also work as craft tapes, such as creating lines on your scrapbooks, journals, paper crafts, fashion designs, all depends on your artistic mind. Grid marking tapes: these chart tapes will come in rolls, and the width of the tape is 3 mm/ 0.12 inch, the length of 1 tape is 13 meters/ 42.6 feet in total. They are easy to install and remove, and they will not leave any residue when removed.