The hair used on a fitch brush comes from the hair of a polecat or the ear hair of an ox. The hair of the fitch brush is courser than a brush made from sable hair, but softer than brushes made from other animals. Paint brushes are made from a variety of animals including squirrel, pony, sheep, goat, camel and mongoose.
The hair on the brush is very smooth, but lower in quality than other animal-hair brushes, according to Silver Brush. The quality of a fitch brush also varies by manufacturer. Some brushes are handmade.
The mop brush is round or oval in shape. The mop brush blends acrylic and oil paint together. The brush can also be used to dab onto a painting canvas to create a soft look such as clouds or distant trees and water.
Along with the mop brush, fitch brushes come in other shapes and sizes, depending on the brush manufacturer. This includes brush for painting other surfaces. The texture of fitch brushes allow them to be used on a variety of surface such furniture to refurbish or evenly touch up areas.