Winsor & Newton Series 7 Kolinsky Sable Watercolor Brush - Round #6 The Worlds Finest Water Color Brush - for artists who appreciate exquisite quality and longevity, there is no other brush than the Winsor & Newton Series 7. Point  having a crisp point and maintaining that during use. Snap & Spring  the brush snaps back crisply into shape with the right degree of spring to allow the artist superior control with a degree of give and take between the brush and painting surface. Flow Control  the color flows evenly and consistently from the point with enough color carry capacity within the belly of the brush to lay down a flowing gestural stoke of colour.