This listing is for vintage, new old stock Esterbrook 2668 Firm Medium 'General Writing' renew point fountain pen nib units in cream/red boxes. Suitable for vintage Esterbrook J series and other pens. 

Nibs are uninked, but the boxes show wear/markings. All are in similar condition to the one pictured. 

Thanks for looking, let me know if you have any questions. Additional pictures on request.