N42 Neodymium Magnet for Engineering, Manufacturing and Technology Applications 19.1mm dia x 6.4mm thick with 9.5mm hole 8.1kg Pull Pack of 20

PERFECT FOR ENGINEERING & MANUFACTURING. They also have many uses in engineering and manufacturing where small size and maximum strength are required. CORROSION-RESISTANT PREMIUM COATING. Coated with three layers of nickel, copper, and nickel to reduce corrosion and provide a smooth and clean finish. RESISTANT TO DEMAGNETISATION. Excellent resistance to demagnetisation. STRONG MAGNETIC HOLD. Each magnet can support a steel weight of up to 8.1kg vertically from the magnetic face when in flush contact with a mild steel surface. SPECIFICATIONS. 19.1mm outer diameter x 9.5mm inner diameter x 6.4mm thick.