Eternal Ink- Marshall Bennett Gray Wash SetBefore creating this highly efficient gray wash set, Marshall Bennett began experimenting with our Motor City Blackbird ink. He suggested adopting the Blackbird pigment for his gray wash set, and together Eternal Ink and Marshall began reworking his set. The new gray wash set is divided into 4 stepped values of black: a 20%, 40%, 60%, and 80% value. With just 4 value steps and very distinct 20% value breaks, this is a highly efficient gray wash set.