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IT IS A 4 HAND HOLE 8 LUG DESIGN. SNAP ON DESIGN MEANS THAT YOU PUT THEM ON WITH A RUBBER MALLET RATHER THAN REMOVING LUG NUTS. 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.