Whiteboard Gridding Tape | Gridding Tape for Whiteboard
3mm Whiteboard Tape - Self Adhesive Whiteboard Tape Grid Marking, Thin Black Tape - White board Gridding Tape for Graphic Chart, Presentations and on OnBuy
Whiteboard Tape, Graphic Chart Tape, Self Adhesive, Assorted 5 Colors, 3 mm x 66 m per roll, Pack of 5 Rolls : Amazon.co.uk: Stationery & Office Supplies