Derwent artists black and white pencils are a unique set of the finest quality pencils in six warm and cool tones they are ideal for sketching portraiture bold contrasting work and more detailed illustrations when used together these pencils complement each other and release the subtle colourencased in cedar wood they have a 4mm wide core and are highly lightfast a tin contains a pencil sharpener and six derwent artists pencils three cool tones arctic oyster and pure and three warm to