Catalyst™ tools now come in Mini-Blades and Contours. Contours are made out of a stiff nylon and Mini-blades are made out of flexible silicone that is heat-resistant, solvent-resistant, dishwasher safe, and approved food-safe by the FDA. These great features combined with their new shapes and convenient sizes allow for extensive creativity with cake decorating, food crafting, ceramics, plaster, and heavy acrylic media.