The TAMIYA M1025 Hummer Aluminum Main Shaft with Hard Steel Ends by GPM HM1025MN is engineered for accurate power transfer and prolonged service life. Manufactured from aluminum 6061 T6 to maintain a low rotating mass while providing structural integrity, and finished with anodizing to reduce surface wear, the component is specified for the Tamiya M1025 Hummer and DF01 chassis to support reliable drivetrain operation under hobbyist use.