Inspired by butterfly wings in a bottle, Lillian has meticulously spent hours building prototype after prototype to make these REAL BUTTERFLY WING pens happen! The beauty of these pieces cannot be captured in a photograph, you have to truly see them in person to appreciate the vibrant specimens! Each pen features one large specimen wing or two paired wings with the name of the specimens used along with their location on the vintage inspired entomology tag. These pens are smooth writing with black ballpoint ink. Twist the pen tip to open and close. No two pens will ever be identical, colors are chosen at random, pictures are for reference to show color combinations you may receive. 1 ink refill included with each pen. All pens are black, and wing colors are assorted, chosen randomly by available specimens.