- Refill Cartridge for the Thin Blue Line Pen
- Medium Point
- Writes upside down & underwater.
- Operates from -30 degrees F to 250 degrees F
Color: Brass Barrel / Black Ink
Cartridge: Fisher Pressurized SPR4, Black Ink, Medium Point
Point Size: 1.1mm Ball
Refill Length: 3.51’’
Packaging: Refill Cartridge Blister Card