The Solid Ink Horitomo Sumi Set is a 4-shade black and grey ink collection developed in direct collaboration with Horitomo — one of the most respected Japanese tattoo masters working today. Designed specifically to achieve the perfect tonal range for traditional Japanese backgrounds and black and grey Japanese tattooing, this set delivers the depth, subtlety, and tonal precision that the style demands. Japanese tattooing relies heavily on nuanced grey gradients to create the atmospheric, layered backgrounds that frame irezumi compositions — and the Sumi Set is built exactly for that purpose. Each of the four shades flows smoothly and heals consistently, giving artists the control needed to build soft, seamless backgrounds without muddiness or tonal inconsistency. The 2oz set comes packaged in a premium resealable bag featuring original Horitomo artwork — making it both a practical studio tool and a collector's item for fans of Japanese tattooing. The set includes 4 Sumi shades (2oz each): Black Dark Medium Light Key Features: Developed by Horitomo for Japanese black and grey tattooing 4 tonal shades for seamless background and greywash work 2oz bottles in premium resealable collector packaging Vegan and cruelty-free formula Manufactured in the USA Clean ingredient list — Aqua, Pigments, Isopropyl Alcohol, Hamamelis An essential set for artists working in traditional Japanese styles or anyone who wants a master-designed greywash palette with authentic tonal depth.