Eclipse Magnetics 833 Alnico Deep Pot Magnet, Metric M6 Thread, 1.06" Diameter Great forgripping, clampingandfixturingapplications, 'deep' pot proportions provide excellent performance and stability 13 pounds pull capacity, measures 1.06" Diameter x 1" Height Can be used up to a maximum operating temperature of 220-Degree C sprayed red finish Alnico is a family of materials based on the same mix of elements (aluminum, nickel, cobalt and iron) M6 thread size