PRO ARTE Prolene Plus Watercolour Brush Set - Five Brushes - W2Artist's Watercolour Brush. Best quality nylon. Set comprises Series 007 Round sizes 1 3 5 7, Series 008 One Stroke size 3 8 inch. The Prolene Plus collection represents a pinnacle of achievement with a wide variety of Prolene synthetic filaments which are ferruled in beautiful gold plate and fashioned with teak handles. They have a delightful 'spring', they point in a most pleasing manner and they hold colour in a wonderful way.. These brushes are