CleverDelights 8 Magnetic Jewelry Clasps - Large Tube Style - Antique Silver Color - Clasp Converter Beautiful antique silver (platinum) color - Large tube style Total length: 3/4" (19mm); Tube length: 9/16" (14mm); 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