With built-in threaded posts, these ceramic holding magnet assemblies facilitate easy installation. The ceramic magnetic material provides excellent magnetic performance and a strong resistance to demagnetization from heat, vibration, and electrical fields. Even better, ceramic magnets are budget-friendly, too. 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.