Material NdFeB Neodymium Shape Block Size 12mm x 7mm x 1mm /- 0.1mm Grade N35 Operating Temperature ≤80℃ /176F Plating Triple plated (Nickel-Copper-Nickel) Magnetic Face 12mm x 7mm Quantity 10 – 1000 Vertical Pull Force 0.49 kg against minimum 5mm steel plate