ECO (Slate Blue / Onyx) - Extra Fine crossover The interesting aspect of the

The interesting aspect of the ink is that if left in some pens for a while without use then the first few lines of writing will be pink and as you go it will turn back to its original color

allowing a total of 120 cards total

NZ Customers: Due to the heavy nature of this product

please do not use with fountain pens

ECO (Slate Blue / Onyx) - Extra Fine crossover The interesting aspect of theTWSBI's ECO fountain pen has always been a great choice for beginners and long time users alike due to its affordability and quality. Fitted with a piston fill mechanism, the ECO has a large ink capacity at approximately 1. 7ml. This version of the ECO is furnished with onyx hardware.