Rite in the Rain Bolt-action Pen - Black W/ Black Ink . Proprietary Ink And Delivery System Used Exclusively In Rite In The Rain Pens Will Write Through Water Sweat Grease And Mud. Pressurized Ink Cartridge Performs In Temperatures From -30f To 250f Underwater (to 35 Ft) And At Any Angle. Specifications for Rite in the Rain Bolt-action Pen - Black W/ Black Ink: Manufacturer: Rite in the Rain Color: Black Condition: New Quantity: 1 Package Contents: Rite in the Rain Bolt-action Pen - Black W/ Black Ink