Not quite a brush and not quite a palette knife, Catalyst tools are crafted from flexible silicone to allow artists a new form of expression. Designed for use with heavy-bodied paints, they are ready for oils and acrylics. Because they are heat-resistant, they excel with encaustics. Artists are using them with plaster and clay. Made of FDA approved silicone, Catalyst tools are great for food crafting. Clean-up is a breeze with Catalyst™ Blades. The silicone is easy to wipe clean and is solvent resistant. Clean up in most cases can be done with mild soap and water. Dried paint can be peeled off the silicone surface. Catalyst™ blades can even be separated from their wood handles for cleaning and easily replaced when dry. These premium blade tools are available in two sizes, 30mm and 50mm.