Made of hog bristle, this brush is traditionally used in oil painting. Our bristle is extracted from the white Chinese bristle from Chungking and is of the highest quality. Its natural hardness responds perfectly to more or less dense oil painting technique and acrylic. Brush sizes – The length and width of brushes given shape and size may vary by brand as brush sizes are not standardized. Most fine art brushes are handmade and as such some variation is expected even among brushes from within a single brush line.