The Magnetising and Demagnetising Coil is a low voltage solenoid and is suitable for magnetising and demagnetising ordinary magnets iron bars strips etc. It comprises of a solenoid wound with insulated copper wire which is mounted on a base complete with switch and 4mm terminals.Solenoid Dimensions: 250mm long x 35mm internal diameterOperating Voltage: 12V a.c. or d.c. at 6AMagnetising by a.c. or d.c.Demagnetising by a.c. only