Material: cork, printable. Size 9.5cm * 8.5cm * Thickness 5MM diameter 8CM * 8.5cm * Thickness 5MM and so on. Sizes and shapes according to customer requirements. If you need proof, you need: Please send your design artwork to the E-mail: helun0000@gmail.com provide a complete ai / pdf format of the draft design. We need a version of proofing fee charged only $ 500, under the immediately after single-refundable.