Fisher Space Pen Black Zero Gravity Pen with US Flag Imprint FSP. This Tactical Pen manufactured by the engineers at Fisher Space Pen is the product of countless hours and comittment to providing you with a tactical pen that will be reliable and efficient. The Fisher Space Pens Black Zero Gravity Tactical Pen has the amazing ability to write underwater upside down at any angle in extreme temps and over grease. For the best available way to make sure you have a great writing utensil for any writing task choose the Fisher Space Pens Black Zero Gravity Pen Specifications for Fisher Space Pen Black Zero Gravity Pen: Manufacturer: Fisher Space Pen Color: Black Fabric/Material: Rubber Length: 5.25 in Closed Length: 5.25 in Features of Fisher Space Pen Black Zero Gravity Pen: Style: Retractable Finish: Silver color Cartridge: Fisher PR4 Black ink Medium poin Packaging: Gift Box Finish: Rubber Finish Package Contents: Fisher Space Pen Black Zero Gravity Pen Fisher Space Pen FSPZG: Black Zero Gravity Pen with US Flag Imprint