Catalyst tools now come in Contours, made out of a stiff nylon that is heat-resistant, solvent-resistant, dishwasher safe, and approved food-safe by the FDA. Ergonomically designed to fit the hand and more responsive to pressure than paint knives, all sides of the Contour can be utilized for painting. 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. Fun shapes and convenient sizes; Heat-resistant, solvent-resistant, and dishwasher safe; Great for food crafting, ceramics, plaster, and heavy acrylic mediums. Available in 3 series: 20 (Green - Scalloped), 60 (Mint - Jagged), 80 (Taupe - Straight Edged)