From the Super Mario Wiki, the Mario encyclopedia
The Banana Barrels are Diddy Kong and Funky Kong's special item in Mario Kart Tour. When used, they are mounted on the sides of the player's kart and continuously shoot out Bananas ahead on the track. A total of sixteen Bananas are shot before the barrels disappear. The Banana Barrels will disappear prematurely if the player gets hit and spins out. Bananas surround the player during a Banana Barrels Frenzy.
Mario Kart Tour
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