This William Shakespeare inspirational quote pen is engraved with one of Shakespeare's most well known quotes, "To thine own self be true." A suitable gift for any playwright, director, English teacher, or Shakespeare enthusiast, this collectible pen comes in an elegant Faux rosewood-colored finish. 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)