Precast Concrete Magnets are designed for fixing precast concrete shuttering, compared with the traditional way of screwing nut and other mechanical fixing way.It is made of permanent neodymium magnets, which has very strong holding force. With the ON/OFF button to control the internal magnetic strength, the shuttering magnet blocks can be at work or closed state, without external power supply. When shuttering magnet is at work state, the touching surface hold tightly onto the platform. When using lever to pull up the button, most of the holding force is shielded and greatly reduced, so the shuttering magnet can be removed easily.