Watercolour brush pen with water-based ink Soft and Flexible brush tip Refillable Non-toxic Odourless Xylene free Brush tip size: 1-4.5mm 1. Works like real water colour brushes. 2. Colours can be spread with water and blended together. 3. Shading effects can be obtained by dipping brush pen tip in water or tip to tip touching of tips to create gradient effect. 4. Ideal for illustrations, modern calligraphy, DIY, designing, manga, scrapbooking, journals, card-making, hand-lettering and others. Shade Name Lemon Yellow, Gamboge, Orange, Rose, Vermillion, Crimson, Pastel Pink, Fuchsia, Violet, Ultramarine, Cerulean, Cyan, Pastel Blue, Yellow Green, Lime Green, Sap Green, Viridian, Turquoise Green, Yellow Ochre, Deep Flesh Tint, Raw Sienna, Burnt Sienna, Grey, Black.