The original "CorLeone Dice” by Leo Smetsers is a beautiful set of dies.
Each set comes with two dies  
The set is perfect for use with the Grum Leather Dice Cup. And together makes the perfect balance.
Each grum leather dice cup includes a st of dice, however many working magicians like to have a spare set.
The beauty of the set along with the grum dice cup is it  can even be used to force the numbers two or five.