304-GRADE STAINLESS STEEL WITH 3-STAGE FINISHING INCLUDING HAND POLISHING. I do not know what "304-GRADE" means all I can tell you is they look sharp and will not rust. I use UPS (United Parcel Service) for United States. There are more categories that may help you that are not displayed.
IF YOU HAVE A QUESTION ON QUALITY JUST. READ MY FEEDBACK FROM BUYERS.