This is a set of PFD Cups and Balls made of thick copper, with a diameter of 7 cm (outer diameter 7.8 cm) and a height of 7.3 cm, making for an exquisite size. Each cup weighs a substantial 152g. This is a so-called Paul Fox type. The cups are sized to perfectly fit a standard tennis ball, and in addition to the regular knit balls, there are also mini tennis balls of the same size as the knit balls. ■ Contents 3 Regular Cups 4 Knit Balls 4 Mini Tennis Balls Storage Bag (Black) ■ Note Please be aware that the mini tennis balls may discolor or crack due to aging.