When ground in a suzuri stone with water, this ink stick produces ink that can be used to make deep black tones and subtle variations of gray. It is ideal for creating beautiful, traditional Asian ink paintings. Details:Produces deep black tonesVariations of gray when ground with water0.62" x 0.38" x 2.75" (1.57cm x 0.97cm x 6.98cm) stick sizeWell-shaped solid blockConvenient liquid formSoot from pine or certain vegetable oilsDesigned for use in Sumi-e PaintingPackaged in a paper box