Working with 12V direct current, the product utilizes the strong suction of the magnet to transmit the power from the motor to the magnetic stainless steel abrasive plate, making it rotate and use for grinding the necrotic tissue of the sole. With the help of sucking wheel, the necrotic tissue at the same time will be taken into powder-box. If you change into the massage subassemblies, the massage hammer will vibrate dramatically when the motor works, which creates a massage effect. At the same time of providing care and nursing for your feet, this product can also relieve your pain and dissipate fatigue, making you energetic.