About this item BREAKTHROUGH TECHNOLOGY - The Catalyst series features paintbrushes that are super stiff yet still extremely responsive. For the first time, the tip of each individual fiber has been split to replicate the natural flags on the finest natural bristle. ADVANCED POLYTIP BRISTLES - The true advancement in these art brushes are the Polytip bristles. Since each fiber has two to three distinct tips, the paintbrush can hold a high volume of paint while providing a smoother application and better control. BETTER THAN NATURAL BRISTLES - Unlike natural hog bristles, our artist paint brushes offer real integrity, maximum stiffness and the best color holding capacity and shape retention. MADE TO MOVE PAINT - Catalyst brushes are designed for use with medium to heavy-bodied acrylics and oil paints. They can even push heavy gel mediums with assurance. DURABLE & AFFORDABLE - Whether you’re a professional painter looking for new art supplies or a beginner, our brushes are more durable, affordable and dependable than most traditional synthetics and natural hair brushes.