Nisstiiv Sterling Silver Diamond Gold and Silver Rollerball Pen

The ink flows nicely and the pen is durable. I really love this fountain pen. The fine nib works best for me.

Sorry pen. Made out of the cheapest plastic available. I am shocked to see "Sheaffer" name on this poor excuse of a fountain pen!!!

For what this pen costs, it is worth the price, and it comes with an ink cartridge, which appears to be an unlisted bonus. Unfortunately, the cartridge it comes with isn't an exact fit. I also tried to install a Sheaffer ink cartridge (made for Sheaffer fountain pens), and it isn't an exact fit either.When a cartridge is an exact fit for a fountain pen, it fits snugly inside the pen, so that when you screw the cover on the pen, it pushes the cartridge down to pierce the cartridge and form a tight seal. This tight seal prevents the pen from leaking. Unfortunately, both the ink cartridge that came with the pen, and the Sheaffer cartridge, don't get properly sealed when I install the cover. With a plastic pen like this one, having a proper seal might put too much stress on the pen and crack the plastic.I will probably install a Sheaffer converter and use bottled ink with this pen. I suggest if you are going to buy this pen that you do the same. This will require you to purchase additional materials (a Sheaffer converter and a bottle of ink), but I am told by fountain pen aficionados that bottled inks are really the best way to use a fountain pen since you can have fun selecting ink colors, and use scented inks.EDIT: I guess I shouldn't be surprised, the converter fits in this pen as well as I had hoped the cartridges would fit. Evidently Sheaffer designed this pen for use with a converter, not ink cartridges. I recommend you order the following item when you order this pen:  Sheaffer Fountain Pen Piston Convertor (SR/86700)

If you are looking for a practical and inexpensive fountain pen from a great brand this is yours. Ink level window is a bonus.

Sheaffer usually makes such great quality fountain pens! This however, was not one of them. Ink did not flow properly even with thorough cleaning and wash-through. Metal used in nib lacked strength and bent when used.