Gina K. Designs for Therm O Web Masking Magic Strips have all of your masking techniques covered. Pre-cut to convenient 1/8 inch (3.1mm), 1/4 inch (6.35mm) and 1/2 inch widths (12.7mm)  x 7" (17.8mm) lengths, these ultra-thin, delicate-tack, adhesive-backed paper strips are designed to give crisp, clean results without tearing or leaving a sticky residue on your projects. They are perfect for creating lines, borders and patterned backgrounds like stripes or plaids, as well as masking off greetings and sentiments. These strips are reusable and won't create an unwanted halo effect along edges.