When using paper clips the clip accidently attaches to other papers laying underneath at times. When using these type of spring clips it eliminates this potential issue and provides a secure means of attachment.
I HAVE USED MANY DIFFERENT SIZES THIS MEDIUM SIZE FITS MY RECORD KEEPING COPIES I MAY START OUT WITH A SMALL ONE THEN EACH DAY I ADD OTHER PAGES TO MY REPORTS THEN I HAVE TO HAVE A LARGER ONE I CAN USE THIS FOR SIX MONTHS RECORDS AND THEN IT IS EASY TO FIND IN MY FILING