This product is a set of metal differential gears designed as replacement or upgrade drivetrain components for compatible Redcat Racing RC vehicles. These gears sit inside the differential and help distribute torque between the left and right wheels while allowing them to rotate at different speeds during cornering. The metal construction provides improved durability and wear resistance compared to plastic gears, helping the drivetrain withstand higher loads and harsher terrain. They are precision cut to mesh smoothly with other differential components for reliable performance.