Scotch Bi-Directional Filament Tape 8959 Transparent, 50 mm x 50 m (Pack of 1) Extra security  with filaments down the length and across the width, tape is difficult to hand-tear in any direction Fiberglass filaments run in bi-directional pattern, providing high tensile strength across the width and length of the tape Ideal strength for heavy-weight packages and overseas/export packing and shipping Aggressive adhesive sticks to fiberboard and other substrates Transparency provides clear visibility of box graphics, printing, and illustrations