- High-quality Winsor & Newton Winton oil, designed for artists who require large quantities of color - 200 ml tube in French ultramarine blue, transparent finish and excellent permanence - Complies with ASTM D4305 standards, ensuring safety and professional quality - Series 1, color code 263, color index PB29, permanence A(iii) - Ideal for oil painting techniques, crafts, and fine art projects - Provides smooth application, even blending, and long-lasting results