New from Thomas Braunagel's think tank: the smaller version of the popular CID CAL .45. Shorter, thicker in circumference, and with a traditional clip, the K.I.D. CAL .50 is very comfortable to grip and sits easily in the hand while writing. The special design makes this machined aluminum writing tool a real eye catcher, and its ingenious mechanism appeals to the urge to "play". The matte finish provides a universal, understated look. Not a firearm! Compatible with Fisher Space Pen cartridge #PR4, which can be purchased at www.spacepen.com. Overall length: 4 3/8". Weight: 1.4 oz.