Material NdFeB Neodymium Shape Block Size 6mm x 6mm x 6mm /- 0.1mm Grade N52 Operating Temperature ≤80℃ /176F Plating Triple plated (Nickel-Copper-Nickel) Magnetic Face 6mm x 6mm Quantity 5 – 1000 Vertical Pull Force 2 kg against minimum 5mm steel plate