Easy to stretch and convenient to carry; Convenient for picking up fallen screws, etc.; For metal pickup; When picking up fallen screws, etc.; Assembling and repair factory; Machined factory; Suction power(N): 0.6 - 25.6 inches (133 - 645 mm); Magnet diameter: 0.4 inches (11.0 mm); Surface magnetic flux density (T): 0.37 mm); Magnet: Neodymium magnet; Body: Brass