The "Blending" kit consists of 4 practical tools for mixing water-based colors. 1/ an ABT Dual Brush Pen colorless blending felt pen with 2 tips: a flexible nylon brush tip and a fine polyester tip. To clean the tips, simply wipe them several times on a clean paper towel. 2/ a washable and practical mixing palette. 3/ a compact (8 ml) and refillable spray bottle to spray water onto the mixing palette or directly onto the paper. 4/ instructions with practical advice on mixing colors. The blending kit is particularly suitable for drawing with ABT Dual Brush Pens and, of course, with all other water-based inks.