Brass Spring Ring Clasps, Cadmium Free & Nickel Free & Lead Free, Real 18K Gold Plated

Size: about 0.39 inch(10mm) wide, 0.51 inch(13mm) long, 0.14 inch(3.5mm) thick, hole: 0.06 inch(1.6mm), 0.20 inch(5mm) inner diameter.