Item number: 8719325675689 View all from Bespaartopper > View more: Boilers > Nickel-plated Block Magnets from Bespaartopper These N45 block magnets are super strong. They are suitable for all magnetic metal surfaces, ideal for holding insulation foil on radiators, boilers or pipes. N45 stands for the heat resistance and strength of the magnet. The N means that the magnets can withstand a temperature of up to 80°C. The strength of the magnet is indicated by a number. The strongest magnets have the number 52 and the weakest magnets have 30. Product specifications Block magnets - Nickel-plated - 12 pcs. Item description Block magnets - Nickel-plated - 12 pcs. Item number 8719325675689 Version 12 pieces Product type Accessories Country of origin Netherlands Dimensions: 8 x 4 x 3 mm Quantity: 12 pieces