SM81.7416M10 Threaded Hole + Rod with Eyelet Neodymium magnetic system with 74mm diameter, 16mm thickness and M10 threaded hole. It contains an N35, nickel-coated magnet. WARNING! This magnet is extremely powerful. To avoid the risk of crashing your fingers or other serious injuries, please handle it with maximum care when approaching metal surfaces. The pulling force is 280,00Kg . Max temperature 80° C Axial magnetization