Perfect for all sorts of art and craft projects these highly reflective colours really ‘pop’ when you use them on a black background. 12 shimmering colours. Hexagonal 6.9mm barrel. 3.4mm core. These highly reflective pigments work best on a dark background. Add a light water wash to further enhance the effect. These pencils also work extremely well when used in conjunction with other Derwent media to highlight or define objects. Colours sparkle and bounce off the page under different light conditions.