Rockin Beads Brand, 40 Shiny Silver Plated Flat Sided 1 Inch Split Key Ring Connectors Steel Alloy 40 Shiny Silver Plated Flat Sided 1 Inch 25mm outside Appox 3mm thick Split Key Ring Connectors Steel Alloy Rockin Beads (TM) Brand comes with Rocin Beads Size Gauge Card Rockin Beads (TM) Brand comes with Rockin Beads Size Gauge Card