Princeton's series 6300 set: For all Oil, Acrylic and Water Miscible Paints. Highest quality synthetic hairs provide the stiffness of natural bristle and retain their shape when used with water-based acrylics. Brushes are professional quality and have excellent snap for maximum control and color holding capacity. Each brush features a seamless metal ferrule and a long varnished wood handle. This versatile set includes: Bright #4, Filbert #4, Flat #6 and Round #2in a reusable clear pouch.