Standard 40mm threaded shaft, which can work with international standardized balancer accessories. Main shaft flange and threaded shaft threads which have been processed through supersonic quenching treatment. It is strong and endurable. 7. Machine calibration is easy to operate, which can restore machine's precision quickly. 8. Optional motorcycle balancing adapter kit is available. With motorcycle balancing mode. 9. With standard usb port. It is convenient to upgrade the newer software. 10. With power-saving mode, machine comes into standby mode automatically if the machine hasn�??t been used for 5 min. 11. With electromagnetic clutch brake, can positioning the unbalanced position in medial lateral