This 5 in 1 mini multitool key pen by Kikkerland combines function with convenience! The 1" diameter keyring holds onto a .5" wide by 4" tall pen that has a ruler (up to 4") on the side and includes steel bit Phillips and flat head screwdriver to boot! You can refill the blank ink pen with Parker D1 refills when ready. Sold per pen, the tool comes in stainless and black - color is picked at random. The perfect little gift for that DIY'er!