Sable Kolinsky Watercolor Brush Series 6227i Isabey Nº0 The Isabey 6227i watercolor brush is made with extra pure Kolinsky sable hair, nickel-plated brass ferrule, black varnished handle and gold ring. It is a brush whose main characteristic is its elasticity and resistance, offering precision and detail in all your works. These are brushes manufactured following high quality standards. Size: #0. Brand: Isabey