The Derwent Artist Graphic Pencil set is a Professional set for those that are serious about sketching or want to be serious and Professional when doing artwork. The Pencils come available in different sized sets, this however is the largest of them all holding 24 Pencils in different shades from 9B-9H there are shades for every type of drawing. Overall I would recommend this product for its sturdiness, professionalism, and wide variety of pencil choices. Derwent has been around for many years which shows you they have a successful business because people want their products. If you like drawing and sketching I would highly recommend Derwent pencils if you have not already tried them. They make the difference in any artwork.