Combined packaging key rings   They are made by alum. The combination of ST2, SF3 and SS3.   The material is alum.   The unit cost is from USD4.40 to USD4.60 based on different order quantity.   The MOQ is 100pc.   The delivery time is around one week.   We can pack them as customer's request, and add their logo on the packages.    We pack them by blister as the photo shows.