Scotch Magic Tape - 810, 19mm x 33m The world's best-selling tape - Water-based adhesive with long-lasting adhesiveness - The backing material is made of natural fibers - Can't be seen after application and remains invisible - Write-resistant, i.e. you can write on the tape with pencil, pen and felt-tip pen - Invisible when photocopying - Does not turn yellow - 82% of the packaging is made from recycled cardboard - Quiet when used in tape dispensers and easy to cut.