1)Material: acrylic 2)size: 3.5dia 3)any item can be inserted ... .MaterialImported clear resin (+alloy/embedment)Product Paperweight,hourglass,trophy,dice,ball,promotional gift,bathroom sets etcUsage souvenir ,promotional gift ,home decoration ... MORE INFORMATION.ANY OF YOUR COMMENTS WILL BE TAKEN SERIOUSLY. Acrylic disco ball keychain for promotion