CLEARSNAP-ColorBox Fluid Chalk Inkpad. The ink in these pads is ideal for creating various color spectrum and direct-to-paper techniques. Also easy to clean and re-ink. ColorBox pigment pads are water based and formulated to stamp on absorbent papers. Slow drying inks are rich; thick; fade resistant; non-bleeding; acid free and archival. The ink surface is raised for optimum results on any size stamp. ASTM D4236 approved. Non-toxic. Includes 8 colors. Pad measures approximately 2-1/2x4x3/4in. Made in USA.