Many Leatherman tools include a medium screwdriver tool, although some newer models have a bit driver with multiple screwdriver heads, instead of separate screwdriver blades.
The Leatherman medium screwdriver is usually about 5mm wide, 1.5mm thick and 35mm long (3/16" x 1/8" x 1 3/8"). It works well for driving medium-sized flat-head screws, and also works as a prying tool for places too small for the large screwdriver blade. The tool profile varies slightly on each Leatherman model.