20 pcs Starfish Rhinestone Buckles Crystal Sliders Silver Wedding Invitation Wedding Supplies Napkin Ring BK057 Free shipping for additional items. Ship within one business day from California USA. Measurements (approx): 35mm x 32mm (1-3/8" x 1-1/4"), inside center bar: 12mm (1/2") Materials: silver metal with A+ grade rhinestones Shape: Starfish. Has a bar on the back Buy with confidence. We are the biggest rhinestone product seller on Amazon with 2000 rhinestone products.