This chop cup is exactly the same size and design as Golden Cups. That means it's made of brass, ground, polished and finally lacquered. The secret gimmick is so well made and concealed that it can not be seen, even close-up. The built in magnet is balanced in power so you only have to move the cup on the pad to release the ball! The height is 80 mm. The diam. at the bottom is 40mm and at the mouth 70 mm. Weight 130g. Comes with one cup, two red balls (one magnetic) and the cloth bag.