HooAMI 500pcs Silver Tone Stainless Steel Split Rings Chain Parts Findings 7mm(1/4") Material:Stainless steel(Cadmium Free) Color:dull silver tone(not silver plated) Approx:7mm x 0.7mm;Hole size: 5.2mm(1/4") Thickness: 0.7mm Quantity:500pcs Great for connecting clasps, charms, links and other jewelry