This is a 1 3/4" round button with a safety pin back. THE PRICE BELOW INCLUDES 1-4 SPOT COLOR OR 4CP ON WHITE STOCK. For additional color prices please call Customer Service. There are NO set-ups, Free PMS color matching, 5 day production, and RUSH SERVICE IS AVAILABLE. There are also other options available for the back of the button. They include: a refridgerator magnet, clothing magnet, bulldog clip, and a blinking light. Please call for pricing on these options.