The PITT pastel pencils contain a high level of pigment, but are wax and oil free, and are perfectly suited for fine details in pastels. Just like the Polychromos pastel crayons they can be easily smudged to create fine colour transitions and perfectly complement the pastel crayons. Only minimal fixing is required, ensuring that the pastel drawings retain their vividness of colour.Features & BenefitsSupreme quality Pitt Pastel artists\' pencilsExcellent light resistance and colour brillianceGrease and oil freeIdeal for fine and elaborate detailsCan be sharpened with erasing knife 181398 or sharpening machines 180963/181463Available as individual pencils or in various assorted sets12 pencils in a metal tin