Create a very unique pen for a fisherman. This will fit the PSI Fly Fishing rollerball or fountain pen kits that use 10.5mm and 12.5mm tubes. All our fly blanks are made with vinyl label backgrounds and real, handmade flies by our buddy Mike at Anglers Choice Flies. The flies are custom made for us to be used in our pen blanks. This particular blank has a shallow water background on the body and cap. Picture of pens are examples and not included in purchase.