Product Description Purdy 144300025 Ox Hair Series Thin Trim Brush From the Manufacturer Ox-hair is the softest, most supple natural bristle Purdy uses for its handcrafted brushes. It is carefully blended with the softest White China bristle for just the right amount of resiliency. These extraordinary painting tools are perfect for ultra-fine enamel and varnish projects where an ultra smooth, exquisite finish is desired. Whether it's fine artist work, enameling or staining of doors, fine furniture, cabinetry or baseboards, nothing can match the mirror finish provided by these extra soft bristle brushes.