THE TWO  BUFFALO CHOPPER KNIVES YOU SEE ONE HAS AN "F" ON THE END AND THE OTHER HAS AN "L" ONE THE END OF THE KNIFE NUMBER. WHAT THAT MEANS IS THE ONE WITH THE "L" ON IT MEANS THE LEADER BLADE AND IT GOES ON THE KNIFE HOLDER FIRST THE BLADE WITH THE "F" ON IT MEANS THE FOLLOWER AND IT GOES ON LAST

WHY YOU ASK WELL I HAVE ANOTHER PHOTO DOWN BELOW AND IT IS HARD TO SEE BUT THE LEADER BLADE
HAS THE KNIFE SHARPENED ONLY ON ONE SIDE LIKE A MEAT SLICER BLADE AND THE FOLLOWER BLADE HAS A HOLLOW GROUND BLADE SHARPENED ON BOTH SIDES 

AS YOU CAN SEE TWO DIFFERENT STYLE KNIFE BLADES.
THE ONE ON THE LEFT IS THE OPEN END BLADE AND  THE OPENING IS ONLY 7/8"
THE ONE ON THE RIGHT IS CALLED A CLOSED END AND IT'S OPENING IS 1-1/16"