Unique in every way, once again, Silver Brush Ltd has created a tool for every artist. The white goat hair quill will blend in colors in any medium. Oils, acrylics and all water based paints. Goat hair is an organic filament that can take solvent clean up. So soft they will blend color to create the perfect feature in the artists painting. Use on any surface. Every artist’s toolbox should have a Silver Brush Atelier White Goat hair Quill.