252mm traction wheel: The 252mm traction wheel is specifically designed for the 420, 320, 430X, for 435X, 440, 450X lawn mower robot. Its larger size ensures optimal ground and enhanced stability. Compatibility: This wheel is suitable for use with multiple models of lawn mower robots, including the 420, 320, 430X, 435X, 440, and 450X models, a wide range of compatibility options for users.
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