The Fisher Pressurized Cartridge C1 is a specialized refill made by Fisher Space Pens that is made to be used in pens that use Cross type ballpoint refills. Pressurized Refill Design Features: writes underwater, at any angle and over grease. Lasts 3 times longer than average pen, and is environmental friendly.

Fisher Space Pen – Refills – SC4 Pressurized Cartridge for Cross- Black Ink Features:

• Fisher Universal Series Pressurized Cartridge Refill
• Writes Upside Down & Underwater
• Brass & Steel Construction
• Fits Cross Pens
• Color: Black Ink
• Point: Medium & Fine Point
• Blister Card Packaging