Pack of 3 Rohrer & Klingner Erka-Rapid Intra-Bottle Inkwell
Erka-Rapid intra-bottle inkwell fits in a Rohrer & Klingner 50 ml bottle. You just drop it in, turn it over and fill your pen. The intra-bottle inkwell takes the problem of filling your pen when the ink is too low in the bottle. Approximately 1-1/2" high (38mm) and 1" diameter (25mm). Pack of 3.