Description The Esterbrook MV Nib Adapter ("Modern to Vintage") allows the use of original vintage Esterbrook Renew point nibs in your modern Estie fountain pen! Remove the section from the Esterbrook Estie, screw in the vintage nib into the MV nib adapter, switch the converter or cartridge from the pen, and screw in the MV adapter into the barrel of the pen to replace the original section. The MV nib adapter comes with a standard international converter. Vintage nibs, when you can find them, are available separately. Please note: The MV nib adapter fits Standard and Oversized Estie model modern Esterbrook only. Does not fit Camden or JR series, or vintage Esterbrook pens. We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.