The Sailor Pro Gear Stellar Black Hole fountain pen is inspired by black holes found in the galaxy and is a special edition of 1200 pieces.
A Black Hole is formed when the core of a massive star collapses in a Supernova event due to the extreme gravitational forces existing. Even light can’t escape these cosmic wonders.
Every main galaxy in the universe has a massive stellar black hole at the center. Our own Milky Way has Sagittarius A which has a mass equivalent to 4 million of our suns.