ALL GAVE SOME AND SOME GAVE ALL!!!! THANK YOU VISITING MY E-BAY STORE, AND I HOPE YOU FIND A PIN THAT WILL REPRESENT YOU, THE UNIT YOU SERVED WITH, OR THE WAR YOU FOUGHT IN.  UP FOR SALE IS A  12 PACK OF THE ORIGINAL PIN KEEPER HAT PIN LOCK SYSTEM WITH ALLEN WRENCH INCLUDED. YOU WILL NOT EVER LOOSE ANOTHER HAT PIN WHILE USING THIS SYSTEM.