• Pack of 10 round base neodymium magnets with 11 mounting screws included • Neodymium disc magnets, considered the most powerful permanent magnets in the world • Composition: neodymium (Nd), iron (Fe), and boron (B) • Metallic appearance and strong magnetic force in a compact size • Central countersunk hole for easy mounting on surfaces such as wood, plastic, or brick • Dimensions: 30 mm diameter and 5 mm thickness • Holding force of 8 kg per unit • Triple layer coating Ni + Cu + Ni provides high durability • Each magnet supports a vertical pull of up to 12 kg in contact with mild steel • Manufacturing tolerance of +/- 0.1 mm • Recommended uses: models, stage design, furniture making, exhibitions, refrigerator magnet, photo hanger, tools, arts and crafts • Not suitable for small children, keep out of their reach • May interfere with the operation of pacemakers • The coating is not waterproof, but the magnet will not rust if the coating remains intact