Duo

Duo is a Stamina type Fusion Wheel that weighs 42.3 grams. Like all other 4D Fusion Wheels, it can change modes form Stamina mode, where it is balanced, to Attack mode, where it is greatly offbalanced. Stamina mode is the preferred mode as Duo can last nearly as long as Phantom, but with considerably less recoil, making it top-tier for Defense as well. Duo is an excellent part for competition, and is commonly used in the combinations Duo Aquario 230MB, Duo Aquario BD145CS, and Duo Aquario TH170D. It was first seen in the Ultimate DX Set with Duo Uranus.

Beyblades with this part

 * Duo Uranus