Fisher Space Pen Rubber Grip Matte Black Finish with Black Rubber Finger Grip, Chrome Clip (BGS4CL) Writes at any angle, even in Zero Gravity. Simply the most versatile pen ever made New black Rubber finger grip for comfort. Writes in extreme temperatures from -30F to 250F Length Open 5.25" Length Closed 4.125" Diameter without clip .39" Each Fisher Space Pen is precision assembled, hand tested, and carries a lifetime guarantee against all manufacturing defects