Zinc Alloy metal key tags are gold plated.  They measure 1 5/8" X 1 3/8".  Attached is a 1 1/4" split ring.  These can be purchased either in bulk or on cards.

PF2/12 - 12/CARD
1 - 5 Cards = $9.60/Card
6 - 23 Cards = $6.90/Card
24+ Cards = $6.35/Card

PF2X - BULK
12-95 Pcs = $.75 each
96 - 959 Pcs = $.53 each
960+ Pcs = $.48 each