Fisher Space Pen Titanium Nitride & Chrome Infinium Space PenThe Infinium Space Pen writes far longer than our standard Space Pen, which writes three times longer than an ordinary ball point pen. This Infinium Space Pen will write so long in fact, that the average user wont run out of ink in their lifetime. Style: Cap Slides ON & Off; Clip Permanently AttachedFinish: Black Titanium Nitride (reflective)Length: Open 5. 5" Closed 4. 25" Cartridge: Medium Point(Guaranteed to write for a life time.)Packaging: Gift