The Franklin-Christoph single pen case in black blends classic styling with effective use of space and quality leather. This single pen case can hold pens as large as .75 inches in diameter, and as tall as 6.3 inches. The cut out beveled look at the top makes it easier to grasp the pen for removal from the case. The single pen case measures 5.5 inches tall by .75 inches wide and .875 inches deep.