Winsor and Newton Series 666 Cotman One Stroke Watercolour Brushes 1 in (25 mm)

Winsor and Newton Series 666 Cotman One Stroke Watercolour Brushes 3 8 in (9.5 mm)

Winsor and Newton Series 666 Cotman One Stroke Watercolour Brushes 1 4 in (6 mm)

Winsor and Newton Cotman Watercolour Series 111 Designers' Brushes No. 9

Winsor and Newton Cotman Watercolour Series 222 Brushes No. 1

Winsor and Newton Cotman Watercolour Series 667 Angled Brushes 1 2

Winsor and Newton Series 666 Cotman One Stroke Watercolour Brush

Winsor and Newton Cotman Watercolour Series 222 Brushes No. 2

Winsor and Newton Cotman Watercolour Series 333 Rigger Brushes No. 1

Winsor and Newton Cotman Watercolour Series 111 Designers' Brushes No. 1