There are 2 designs available in our Nunn Design Buttons, a bee and crossed arrows. Each button is cast in lead-free pewter with a brass button shank embedded into the back. These are about 17.5mm in diameter, 3mm thick and have a hole size of 2mm. Buttons are plated with copper, 24k gold and .999 fine silver. Read more here: Organic Buttons & Charms – 2018 Summer Collection Product Review!