Nikola Tesla Engraved Quote Pen -"to Find The Secrets of The Universe, Think in Terms of Energy, Frequency, Vibration.";

This Nikola Tesla pen is engraved with one of Tesla's famous quotes, "To find the secrets of the universe, think in terms of energy, frequency, & vibration." This durable, heavyweight pen is a worthy addition to any pen collection, and makes a suitable gift for scientists, inventors, engineers, students, professors, & Tesla fans! Compatible rollerball ink refill cartridges include: Inkstone RB01 / Monteverde M222BU / Monteverde M222BB / Zebra JF-1.0 / Zebra JF-0.4 / Schmidt 5285 EF (Needle-point) / Pentel Energel LRN7-A (Needle-point) / Pentel Energel LRN5 (Needle-point)