Praxis Button Lock Knife Handle - Blade:Aluminum Black / Black Designed to fit the Fisher

Designed to fit the Fisher Space Pen® PR4 (included) or Schmidt Megaline 4889 ink cartridge

There is an option to either store cards in the designed slots

Use as a classic briefcase or unpack the backpack straps and shoulder for easy travel

Upper Brain Pocket intelligently organizes travel essentials up top

it's durable and the weight is just right

Praxis Button Lock Knife Handle - Blade:Aluminum Black / Black Designed to fit the FisherThe Praxis now with button lock mechanism. The knife features contoured handles over a skeletonized liner. Lanyard hole in the backspacer and deep carry pocket pocket clip for easy carry.