Round, Good flexibility, holds plenty of colour and keeps a good point. Short handle. Using 100% innovative resilient filaments only. Gold Sable has been developed for watercolour, acrylic, oil and gouache. Gold coloured filament in a seamless metal ferrule offer quality to perform like traditional red sable hair. Each filament has craters on the surface which enables the brush to retail an excellent colour loading capacity. Each filament is tapered with a chemical process just like the shape of natural animal hair. Excellent durability and retains its shape.