Prismacolor Art Stix, Colorless Blender (77172) Art Stix are the core of a Prismacolor Colored Pencil without the wood These woodless pencils contain the finest pigments to produce smooth laydown a Art Stix are great for covering large areas - broad strokes -shading - and ble Art Stix colors are matched to Prismacolor Colored Pencils Colorless Blender