I make each product to be a fine quality. I personally select each piece of wood to give each pen an unique quality to it. Even if 2 pens are made out of the same wood, the grain paturn makes them unique. I made this pen out of the beautiful bubinga. It is a beautiful wood to turn, as well as have. The black ink can be refilled, you can replace it with blue ink if desired. Refilled can be purchased in any office store.