Double dice has been a thing for many years now and finally Duncan has capitalized on their own double dice product (previously you would find or make your own small dice weight to combine with a Duncan dice). I grabbed a prototype white and a full production in teal. Loving both of them! The proto is slightly heavier which I like more than the production version, but both work very well with every yoyo I have tried with them. Hopefully this will get throwers to give double dice a try and come up with some groovy tricks. There aren't enough people doing this style out there! I love these counterweights so much and I am debating buying another set.