Connoisseur - Synthetic Bristle - Long Handle Brush - Flat - 4 - Connoisseur Pure Synthetic Bristle Flat Long Handle Brush is premium quality, heavy duty synthetic bristle will endure the heaviest paints and solvents. Connoisseur pure synthetic brushes will accommodate oil and acrylic color straight from the tube - from thick to thin. The Connoisseur Pure Synthetic Bristle interlocking fibers mimic the makeup of natural hog bristles, however, the synthetic filaments are sturdier than nylon - with the additional advantage of a better paint holding capacity. Connoisseur fine artist brushes are hand crafted. Only the best natural hair or synthetic fibers are utilized in the manufacture of this premium line of brushes. This is a size 4 Flat Long Handle Synthetic Bristle Brush.