KKoh-I-Noor Gioconda Graphite Blocks (2B, 4B, 6B) provide a versatile, professional selection of three un-encased, chunky 7x7mm square drawing sticks engineered for broad expressive strokes and massive shading coverage. This premium monochrome trio includes soft, medium, and extra-dark grades that glide effortlessly across rough sketch pads, bristol boards, and heavily textured fine art papers. The sharp edge profiles are perfect for blocking out structural grids, while the wide flat sides lay down rich, beautifully blendable tonal values under zero hand pressure.