These Star of David Key Tags are made from Zinc Alloy, then are gold plated, and finally filled with blue epoxy.  They measure about 1 3/4" in diameter and have a 1 1/4" split ring attached.  They can be purchased either bulk or on cards.

STD/12 - 12/CARD
1 - 5 Cards = 8.65/Card
6 - 23 Cards = $6.25/Card
24+ Cards = $5.75/Card

STDX - BULK
12 - 95 Pcs = $.67 each
96 - 575 Pcs = $.47 each
576+ Pcs = $.43 each