BCW slab style holders are the perfect what to house your unslabbed coins in slab style holders. The outer holders are made of clear, scratch resistant plastic. The display foam inserts and the outer holders are chemically inert and free of PVC, acids or chemical softeners. The foam inserts have a labeling field that works great with avery labels 5195 to display information about the coins. BCW slab style holders cannot be sonically sealed like NGC or PCGS holders. Outside Diameter: 2 1/16 X 2 7/8 X 5/16