These versatile 7mm clam shell findings work very well with Wirelace. Just glue the WireLace into the clamshell bails, close the two shells of the bail and let dry. Both pieces come with their attachment rings soldered in place making them very easy to use. When closed, the clam shell bails measure 7x4mm.The lobster clasp with comes with the set is 12mm. Learn how to use clam shells with our video here.