POWERFUL MAGNETS WITH CLAMPS: With a 35 lb pull strength on flat metal surfaces, these ceramic round base magnets deliver serious holding power. They are ideal for hanging items in homes, workshops, industrial, and commercial spaces. VERSATILE APPLICATIONS: These round magnets feature silver spring clamps with a 1" opening, securely mounted at the center. They are perfect for holding lights, kitchen gear, garage tools, signs, brooms, clothes on a hanger, and more with ease. DURABLE AND CLEAN: Ceramic magnets resist corrosion and won't wear down. Our circular magnets install easily without tools or hardware, and remove cleanly, leaving metal surfaces damage-free. HIGH-QUALITY CONSTRUCTION: Crafted from strontium carbonate and iron oxide, our ceramic (ferrite) magnets are molded, sintered at 2,000°F, precision-ground with a diamond wheel, magnetized, and carefully inspected to ensure reliable performance. MASTER MAGNETICS: We are a USA-based company trusted since 1976 for strength, quality, and performance. Our extensive line of affordable, powerful magnets makes tasks easier in homes, workshops, and industrial spaces., Manufacturer: Master Magnetics, Inc.