Boker Plus MPP Tactical Pen, Aluminum Black, B-09BO092

Multi purpose pen black. The sturdy clip keeps it readily accessible at all times, and the screwed on cap prevents accidental separation. The deep finger grooves provide superior comfort. To change the ink cartridge, simply unscrew the pen counter clockwise, to prevent accidental disassembly. Compatible with Fisher Space Pen cartridge #PR4

Diameter (cap): 13.9 mm. Overall length: 6".
Weight: 1.4 oz.