Grumbacher Gainsborough Filbert Oil and Acrylic Brush, Hog Bristle, Size 4 (1271T.4) Strong, durable brush easily manipulates heavy paint; unique taper causes the bristles to interlock, which maintains its original shape and helps control the placement of color A perfect compromise between rounds and flats - shaped like a flat with a curved end, allowing for more flexibility than a flat The side can be used like a round and the broad side like a flat Made from Chungking hogs hair - best choice for oil and acrylic paint due to the flags that hold color Professional-grade brush Strong, durable brush easily manipulates heavy paint; unique taper causes the bristles to interlock, which maintains its original shape and helps control the placement of color The side can be used like a round and the broad side like a flat Made from Chungking hogs hair - best choice for oil and acrylic paint due to the flags that hold color Professional-grade brush