5.5” ceramic holding magnets from BuyMagnets.com provide you with an economical holding magnet assembly solution. The ceramic material means that these magnets are not only budget-friendly, but also resistant to demagnetization. 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.