Enjoy reliable magnetic performance with this square ceramic holding magnet. This item provides you with all the benefits of ceramic magnetic material, including excellent magnetic performance, a resistance to demagnetization from heat, vibration, and electrical fields, and an economical price tag. This product is suitable for use at temperatures up to 180 °F. Do not use this magnet at temperatures above 180 °F, as excessive heat may cause the standard epoxy holding the magnet material in place to fail.