SPEEDBALL ART PRODUCTS-Signature Series Pen with Ink and Pen Cleaner. The Signature Series offers a beautiful gold and black marbled pen holder with a hand-crafted gold plated #513EF pen nib, 12 mL of black pigmented acrylic ink, and 12 mL of Speedball pen cleaner. The ink is archival, acid free, waterproof, and non-toxic. The pen holder measures 6-1/2 inches long, the nib is 1 inch long.