1 Each. When you need to communicate or display posters, notices, charts, graphs or other items, try this safe message holder. By using a patented system of interlocking rollers, the Grip-A-Strip automatically adjusts to hold various thicknesses of paper, posters and other items up to 1/8" thick. Design eliminates the need for dangerous tacks and pins. Mount the message holder with a mounting bracket or double-sided tape.