UNICRAFTALE 5 Sizes About 205pcs Stainless Steel Ball Chain Connectors Fit for 1.5/2/2.4/3.2mm Ball Chain Beaded Chain End Clasp Connectors for Key Chain Necklace Repairing : Amazon.co.uk: Home & Kitchen
2.4mm 10cm,15cm Metal Silver Ball Bead Chain Connector Clasp Dog Tag Keychain | eBay
Tutorial - Ball Chain Connectors - Fire Mountain Gems and Beads