This Princeton Catalyst Polytip Series, Synthetic Bristle Filbert, Size 4, is quite similar to a Flat Shader, but filberts have a rounded end that is more suited for soft edges like flower petals.
ABOUT THE SERIES
Catalyst™ Polytip Bristle brushes are another Princeton breakthrough that advances the science of synthetic hair. This line of brushes is super stiff, yet still extremely responsive. Unlike natural hog bristle, Catalyst™ has real integrity in water – natural bristle can be rendered useless when it is water-soaked. But the true advance in Catalyst™ is the Polytip feature. For the first time, the tip of each individual hair has been split to replicate the natural flags on the finest natural bristle. By giving each individual hair 2 to 3 distinct tips, Catalyst™ brushes hold a higher volume of paint while providing a smoother application. Designed for use with medium to heavy-bodied acrylics and oil paints, Catalyst™ pushes even heavy gel media with assurance.