Premium Material -- Made of high quality acrylic material, highly transparent and easy to see, more dense than ordinary acrylic and good texture. Size Specification -- You will receive 6 zip top adhesive spill proof rulers, each measuring approximately 19.7cm (7.76") long, 0.46" to 0.81"(1.18-2.07cm) wide and 0.75cm (0.30") thick. Clearly Marked -- Each spill-proof ruler is engraved with a size specification that is clear and easy for us to choose the right size. Easy to Use -- Choose the right type of ruler, snap the notch on the zip ruler and then apply glue to the uncovered parts of the zip fabric on both sides. Wide Range of Uses -- Handcrafted acrylic spill-proof ruler can be used for all kinds of zips to prevent spillage and for handcrafting bags, clothes and other garments.