Derwent Inktense Pencil Blister 6pc Inktense combines the brilliant intensity of pen and ink with the versatility of line and wash. Use dry to create strong, vivid tones then apply a light water wash to achieve a translucent, ink-like effect. Once dry, the colour will not wash out and can be worked over again with both soluble and non-soluble media. The hexagonal 8 ply (8mm diameter) wood casing has a 4mm water-soluble strip. The barrel is stained ink blue with colour coded end dip and distinctive angled metallic blue band. It is finished with a gold imprint detailing range, colour name and number.