Material NdFeB Neodymium Shape Block Size 20mm x 6mm x 1.5mm /- 0.1mm Grade N35 Operating Temperature ≤80℃ /176F Plating Triple plated (Nickel-Copper-Nickel) Magnetic Face 20mm x6mm Quantity 5 – 1000 Vertical Pull Force 1 kg against minimum 5mm steel plate