Description This Edison #6 Jowo 18k Rhodium-plated Medium nib unit is a complete all-in-one nib and feed unit which screws into your Edison fountain pens that use a #6 JoWo nib unit. This Edison rhodium-plated 18k gold nib unit generally looks best in pens with silver trim. Additional Edison fountain pen nib units are available separately as well. Make sure to remove the cartridge or converter in the barrel before unscrewing and replacing the nib unit. Please Note: Some 18kt nibs are special order and will take an additional 7-10 days for delivery. We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.