The Keyring Top / Keychain Top is made in Germany and is a great toy you can carry with you wherever you go. I often play with it while waiting in line at the post office. It's made of stainless steel and comes in a gift box which says it can spin up to 7 minutes. Average spin times are between 2 and 3 minutes. It easily unscrews from the keyring so that you can spin it like a regular top. Diameter = 1 inch (25 mm), Height = 1 3/16 inches (23 mm) (without the keyring), Height = 2 7/8 inches (73 mm) (with keyring).