14K Gold Filled Silicone Round Bead Approximately 4 mm. Small Closed Ring Approximately 2 mm Outer Diameter, 1 mm Inner Diameter, and 24 Gauge (0.50 mm) Wire Thickness. Silicone Hole Size Around 0.5 mm. For Best Silicone Fit Use 0.85-1.2 mm Chains. Sold in a Pack of 2 Pieces.