20 Sets - CleverDelights Magnetic Jewelry Clasps - Deco Drum Style - Antique Bronze - Converter Beautiful antique bronze color - Deco drum style Total length: 9/16" (14mm); Tube diameter: 5/16" (8mm); 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