Tombow Blending Kit For Blending Water Based Brush Pens (Pack 4) The 4 in 1 Blending Kit consists of practical tools to blend waterbased colours. 1. Colourless Blender Pen with two tips, filled with water. Fine tip for exact colour gradients; wide brush tip for extensive blending. To clean, simply wipe the tips several times on a clean paper. 2. Refillable, compact Blending Mister to spray water onto blending palette or directly onto the paper. 3. Washable, handy blending palette. 4. Instruction with practical tips concerning the blending of colours. The Blending Kit is especially suitable when drawing with ABT Dual Brush Pens and of course also for all other, waterbased inks.