Speedball Water Soluble Relief Ink Set - Enjoy professional results and true archival quality with the vibrant, intense PrintMasters relief inks from Speedball. Designed for the accomplished printmaker, these highly pigmented, true process colors allow you to achieve an unlimited color spectrum and offer viscosity similar to that of oil based inks. Plus, the inks can be modified with Speedball extender base to produce transparent layers- thus extending the color range. Full ranges of colors and tones can be mixed using a combination of the process colors, white, and black. Compatible with all Speedball water based block printing inks. Speedball water soluble inks are non-toxic and clean up with water. Set includes 5oz tubes of Black, Yellow, Cyan, Magenta, White, Extender, and Retarder. Also included is an instruction booklet with process ink color blending tips.