Cont carrs sanguine pack of 12carrs crayons have a 6 x 6mm cross section and are slightly softer in texture than pencils they are excellent for sketching as well as for monochrome or polychrome drawingcarrs may be used on all types of paper and even on canvas especially the softer grades they may also be used in conjunction with paper stumps tortillons and putty rubbersblood red carrs