The idea of a custom multi (or custom multi-pen) is groundbreaking. You choose the barrel, you choose the inserts, you make the perfect multi-pen tailored to your exact needs. When building a custom multi, stay within one brand family and select your favorite components. Inserts can include pen refills of different sizes, colors, and even types of ink! Custom multis can also include pencils, or even erasers. Have fun exploring the world of custom multis, we are always interested to hear about the combinations you have discovered!