Student flat watercolour brush set set of 7one of each size 3mm 4mm 6mm 10mm 12mm 18mm and 25mmspecialist crafts synthetic watercolour brushes have hairs graded and selected to hold watercolour paints to maximum capacitythe student brush range offers a huge choice of sizes and bristle options the seamless ferrules are made from anti rust anodised aluminium and the silver coloured coating on the birch handles has been lacquered to give full protection against water where possible we