OHTO Extremely Thin Mechanical Pencil Minimo Sharp, 0.5mm, Black Body EDC

Never be caught without a writing instrument again! Sporting an ultra-slim diameter of 3.5 mm, OHTO's aluminum-body Minimo mechanical pencil fits just about anywhere and is easy to carry at all times. It comes in a flexible, plastic, card-shaped holder with a pencil sleeve attached. The card (not including the pencil sleeve) is the size of a Japanese business card (3.6 x 2.2 inches, or 9.1 x 5.5 cm), which is a little larger than credit cards and standard U.S. business cards. It slips easily into daily planners, pocket notebooks, and wallets. The pencil can also be stowed on its own if desired, using the clip to secure it to papers and pockets.
The OHTO Minimo uses 0.5 mm mechanical pencil leads. To refill the pencil, pull the cap off the end button and add more leads to the tube.