Material NdFeB Neodymium Shape Block Size 9mm x 5mm x 1.5mm /- 0.1mm Grade N35 Operating Temperature ≤80℃ /176F Plating Triple plated (Nickel-Copper-Nickel) Magnetic Face 9mm x 5mm Quantity 10 – 1000 Vertical Pull Force 0.54 kg against minimum 5mm steel plate