Two of them on each end? You put one of them on each end. Two in total. Also the correct way to use a roll of trashbags is to just leave the roll attached to the trashbag you are currently using and tear it off when you are about to throw it out. That way you don't have a trashbag hanging on the outside of your trashbin and the new bag just pulls up when you pull out the old. Please never call yourself clever again.