IDEAL FOR CREATIVE APPLICATIONS. Our neodymium magnets are commonly used in creative applications such as models and theatre design, clothes making, furniture making, exhibitions, and packaging. USEFUL FOR MANUFACTURING & ENGINEERING. Neodymium magnets have many uses in engineering and manufacturing where small size and maximum strength are required. CAN BE SECURELY FIXED IN PLACE. Can be fixed in place with 5mm diameter countersunk screws. CORROSION-RESISTANT PREMIUM COATING. Coated with three layers of nickel, copper, and nickel to reduce corrosion and provide a smooth and clean finish. RARE EARTH MAGNET. Each magnet can support a steel weight of up to 5.7kg vertically from the magnetic face when in flush contact with a mild steel surface. SPECIFICATIONS. 15mm dia x 7.5mm thick x 4.2mm c/sink., Weight: 0.110231131 Pounds, Manufacturer: Magnet Expert®