Rockin Beads Brand, 30 Silver Plated Cabochon Setting Bezel Cup Buttons 18mm Outside (16mm Inside Cup), Sold Per Pack of 30 Silver Plated Cabochon Setting Bezel Cup Buttons 18mm Outside (16mm Inside Cup), Sold Per Pack of 30 Zink alloy lead safe Rockin Beads (TM) Brand comes with Rockin Beads Size Gauge Card use with 16mm cab or dome