HOUSWEETY 10PCs Silver Tone Stainless Steel Open Jump Rings 15mm(5/8") Findings Approx:15mm;Hole size: 10mm(3/8") Thickness: 2mm(1/8"); Main Color:dull silver tone(not silver plated); Main Material:Stainless steel(Cadmium Free); High quality stainless steel,no fading, nondeformable,allergy free; Environmental protection,beautiful appearance,light weight,convenient installation.Beware of swallowing by children. Perfect findings for a variety of jewelry making.Every findings has its unique design and style and theme, hence the jewelry made with them are unique and represent your own fashion.