This innovative bone folder is made of 100% teflon. Teflon is a unique material in many ways, but, for our purposes, the primary benefit is its low coefficient of friction. Because of this, glues, adhesives, inks, and paint will not stick to it. Moreover, it will not leave any kind of burnishing mark. The Crafty Gnome Teflon Bone Folder is the best burnishing tool on the market and is ideal for bookbinding, scoring, folding, creasing, scrapbooking, origami, card making, paper crafts and much more.