VERSATILE APPLICATIONS: These magnetic assemblies are low profile with an attachment hole in the center for a fastener to accommodate a hook, knob, eyebolt, or other fastener. Position or hold inspection equipment, indicator gauges, lights, signs, antennas and more. RESISTANCE TO CORROSION: Ceramic magnets are resistant to corrosion, making them suitable for both indoor and outdoor use without the worry of deterioration over time. DURABLE: Nickel-plated cup w/ center mounting hole to add hook or knob. Excellent in high temperatures, up to 400° F. COST-EFFECTIVE SOLUTION: Ceramic magnets are affordable and permanently-magnetized, making them a practical choice for applications that require a reliable magnetic attachment without breaking the bank. MASTER MAGNETICS: We manufacture magnetic products for commercial, industrial, and consumer use. Our goal is to create reasonably priced products that make your life easier. Our products will help you realize the value of magnets and their many uses!