I just inked the pen 1 time to ensure that the nib was writing in perfect conditions. The nib size is M and it writes really smooth and juicy. Please let me know if you have any questions. The item "Limited 1000 SAILOR Tequila Sunrise Fountain Pen Cocktail Series Fountain Pen M" is in sale since Friday, June 28, 2019. This item is in the category "Collectibles\Animation Art & Characters\Japanese, Anime\Other Anime Collectibles".The seller is "sul_dag" and is located in Forest Hills, New York. This item can be shipped to United States.