What you receive: You receive 12 pieces of black whiteboard tape, the width of each whiteboard tape is 3.2 mm/0.13 in, the total length is 66 m/216.54 ft, suitable size, sufficient quantity, convenient and sufficient for your daily use. Premium material: These dry erase tapes are made of PET material, tough, not easy to deform, not easy to break, self-adhesive, good adhesion, can stick ly to the dry erase board with strong adhesive. White board tape lines: You can use these tapes to create and label line charts, divider charts, charts, grids, guides and more to keep things clean, neat and organized. Suitable for various surfaces: These dry erase board tape lines are suitable for various surfaces, such as whiteboards, notepads, dry erase boards, plastic, glass, paper, wood, metal, ceramics, etc., easy to apply and remove, and stay on the leaves no residue. Easy to use: This pinstripe tape has no paper backing, is easy to apply and remove, and leaves no residue on the . Product name:12pcs black whiteboard tape Weight:192.6g Colour:Black Material:Plastic Size: Thickness/width:3.2mm/0.13in (error about 0.3mm) Total length of tape:66m/216.54ft Diameter:10.5cm/4.13in (error about 0.5cm) Package Contents: 3set x PET whiteboard tape Only the above package content, other products are not included. Note: Light reflection 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.