Vector Keychain Ballpoint Pen

Need to always keep a pen nearby?  This Vector Keychain Ballpoint Pen is a great addition to your keychain.  When you need to write a quick note, just pull the pen catridge out of the metal barrel and start writing.  But, when you need a full size pen for more in depth note taking, this ballpoint pen converts into a full size pen by screwing the barrel onto the cartridge.  Come with a split ring to attach to your key chain, purse, or backpack.