Fisher Space Pen Pressurized Refill - Black / Blue Collection_Back Shelf Neptune’s trident is a pocket-sized

Neptune’s trident is a pocket-sized pledge to defend the oceans

second time zone indication in key shape and CyS emblem with red Superluminova applied

diameter 44 mm

As with the original Homo Sapiens

Comes with one black & one red ballpoint refill in pen

Fisher Space Pen Pressurized Refill - Black / Blue Collection_Back Shelf Neptune’s trident is a pocket-sizedPaul C. Fisher developed the pressurized refill for NASA in 1966. It's still in use today on manned space flights because it performs when other pens fail. The combination of tungsten carbide ballpoint and thixotropic ink in a hermetically sealed cartridge pressurized at nearly 35 lbs. per square inch allows it to write in freezing cold, boiling heat, underwater and at any angle, even upside down!