Eclipse Magnetics E692 Ceramic Shallow Pot Magnet, 1-13/64" Diameter x 1-3/16" Height, 4 lb of Pull Force Nickel plated steel pot with ceramic magnet, supplied with bolt and nut Ceramic magnets are the most widely used magnet type because of their relatively low cost and high coercive properties (do not lose their magnetic properties easily) Operate up to 250 degrees C maximum temperature (for higher temperature applications, search for Eclipse Alnico Magnets) 10 pounds of pull force 2-1/4-inch diameter x 1-3/16-inch height