Robert Simmons Signet brushes are handmade using high-quality Chungking hog bristle, interlocked and deep-set in extra-long, seamless, nickel-plated ferrules. Long beech wood handles are treated with five coats of lacquer. Ideal for acrylics and oils. - Robert Simmons Signet Brush - Flat, Long Handle, Size 4Simmons Signet Flat, SZ 4 -