Duncan - Cold Fusion GT This is a wing-shaped version of Playmaxx's Cold Fusion. It is a full metal yo-yo with a narrow wing shape, a unique sight among the current mainstream full metal yo-yos. Originally based on Playmaxx's "Cold Fusion," this model is a string trick version of the Cold Fusion. The first version was released around 1998, but died out. Then, in the 2020s, a string trick model called a pull-back metal yo-yo, which can be likened to a retro boom in the yo-yo world, became a hit among the core yo-yo fan base, and this product is a reissue aimed at those nostalgic fans. While enjoying the retro atmosphere, this model is also a light touch on modern tricks for those who enjoy them. With a wider range of tricks than the original, this yo-yo satisfies the selfish desire to "play with the feel of the old days, but also throw today's tricks.