Loew Cornell Paint Brushes - 4 Piece Natural Bristle Round Paint Brush Set Round assortment. Short wood handles 4-piece Natural Bristle Round Paint Brush Set features round brushes with bristle tips and green handles. Set includes sizes 1, 3, 5 and 10 For use with acrylic and watercolor. For beginning crafter painters, beginning fine artists RECOMMENDED USES: Excellent for use with all oils, watercolors, acrylics and tempera. Use on canvas, ceramic, fabric, wood, copper, tin and other surfaces.