The Bark, Mulberry, Cosmic Sky, and BetterPress Black 1.25 x 1.75-inch ink pad colors are included in the BetterPress Ink Regal Tones Mini 4-Pack Set. For the BetterPress Letterpress System, Ranger Archival Ink was specially developed in these inks. They are permanent, waterproof, and free of acids. Only use BetterPress Ink Reinkers, which are supplied separately. Improve your creative process with BetterPress. It's a simple technique that generates stationery that looks professional and feels detailed to the touch. The BetterPress System enables you to easily, quickly, and precisely produce letterpress effects using your manual die-cutting machine. Made in the USA.