SEXY SPARKLES Chunk Snake Chain Necklaces with Lobster Clasp and Extender Chain Fit Snaps Chunk Buttons Quantity: Snap Button Jewelry Necklace Snake Chain Silver Tone Clear with Rhinestone W/Lobster Clasp & Extender Chain Fit 18mm/20mm Snap Buttons Material: Zinc Metal Alloy+Alloy+Rhinestone Size: Approx:45.5cm(17 7/8") long Hole size: 6mm( 2/8") Thickness: 1.2mm The Size of Lobster Clasp:10mmx6mm( 3/8"x 2/8") The Size of Extender Chain:8cm(3 1/8")