Suitable for all watercolour on paper techniques. This brush with a reservoir is practical and easy to use.Suitable for all water-soluble formats including coloured pencils and graphite (TECHNALO, PRISMALO® Aquarelle, SUPRACOLOR® Soft Aquarelle, MUSEUM Aquarelle, GRAPHITE LINE), pastels (NEOCOLOR® II Water-soluble), watercolours and gouaches. The pump system makes it easy to clean the brush's synthetic fibres with water. Ideal for travelling, art classes and improvised sketching, the Caran d'Ache brush with water reservoir is a modern complement to traditional watercolour brushes.Technical Description- Dimensions: Length - 14 cm, diameter - 12 mm, weight - 9 grams, transparent plastic- Closure cap- Pump system easily refills reservoir, rubber button to regulate water flow- Reservoir: holds 20 ml, can be removed thanks to its screw top- Unsuitable for children under 3 years