The bone folder is used by book binders, graphic artists and crafts people for creasing, burnishing and gluing materials together. Key Benefits Size: 5 3/4 x 5/8 x 1/4 inches Non-stick due to Teflon® composition. Heat Resistant up to 600 º F Chemically Inert, non-corrosive, and non-contaminating. Strong Reusable This bone folder is made of Teflon®, a material which offers a number of benefits over bone and plastic. This means that adhesives, inks and paints will not stick to it. If you use a traditional bone folder today, you know its tendency to get worn down, discolored, and stained with age; this leads to messy clean up or worse, contamination of your next project. This is not the case with a Teflon® bone folder; it will only get smoother and shinier with age while making clean up a snap.