Ball Archival Memory System Pen Set. Set includes the following colors: Violet, Green, Magenta & Black. From creating journals to creative lettering, the Zig Memory System ball point pens will be an integral part of your scrapbooking. The pigment ink is: acid free, archival safe, waterproof, fade proof, lightfast, non-bleeding, and photo safe. 0.5mm tip pens. 4 pens per pack.