These tags are as good or better quality than tags costing 4 times as much (ASIN: B00BJLS55G) Two of these for about three dollars vs. 8 dollars each for the others. We have some of each, bought the expensive ones first and then these. The engraving is about the same - neither is very deep - but they're almost identical. The sheet steel that this one is made from may be a bit thinner but it's plenty sturdy and lighter weight.
If I had it to do over again I'd buy these exclusively. There's no future in aluminum tags. Eventually they weaken & break at the attachment hole.
These are shipped in an ordinary envelope, taped to a sales sheet with 2 stainless steel rings. There were no errors in the engraving.