8 CleverDelights Magnetic Jewelry Clasps - Shiny Drum Style - Silver Color - Necklace Magnet Converter Beautiful silver color - Shiny drum style Total length: 7/16" (11mm); Tube diameter: 1/4" (6mm); Connector hole: 1/16" (2mm) Easily fasten your necklace chains with these magnetic clasps Perfect for converting pesky necklace clasps into a simple magnetic clasp or for those suffering from arthritis Top-quality CleverDelights-brand clasps -- Ships from a USA warehouse