HOUSWEETY 4PCs Hollow Floating Charm Locket Pendants Round Silver Plated NO GLASS 3.6x2.8cm Main Material:Zinc Metal Alloy;Main Color:Silver Plated Approx:3.6cm x 2.8cm;hole size:5.5mm x 3.4mm;Thickness:5.5mm( 2/8"); NO GLASS perfect DIY jewelry making charms;can be opened and add little crafts as you like 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.