BuyMagnets.com stocks fifteen different varieties of plated N42 neodymium block magnets. Each of these neodymium block magnets are plated with nickel to protect them from corrosion and physical wear, and they have a maximum operating temperature of 180°F. Available in many different sizes with holding forces ranging from 1.5lbs to 63.1lbs, we have the perfect N42 block magnet in stock for you.