1.Uses a 3-sectioned steel shaft. 2.Precise in measure measurement. balanced in rotation, and the speed is in proportion to the centrifugal effect. 3.The three point suspension includes a simplified shock absorbe. 4.The machine is well grounded to avoid any danger from shock. 5.The starting operation employs a clutch, acceleration is easy. A long engine life is assured 6.With smooth braking, the machine stops whenever you wish it. 7.No need for a cement base allows the machine to be placed anywhere.