Features: Heavy duty neodymium magnets deliver 20lbs pull force with 1/4" 20 threaded studs, featuring nonslip rubber coating for scratch resistant mounting of cameras, LED lights, and tools on metallic surfaces. These rare earth magnets combine corrosion resistant construction with threading option (1/4" 20 male/female), ensuring secure outdoor/indoor equipment installations without surfaces damage. for photographers, enthusiasts, and technicians needing magnetic mounts for cameras, mobile devices, or workshop tools in dynamic environments. Perfect for attaching security cameras to metal beam, fixing LED panel to machinery, or organizing tools in garages using the 50mm magnetic base with 400g load capacity. Adjustable angle with included metal plates, enabling creative installations on nonmagnetic surfaces like glass wall or phone case for multiple device compatibility. Specifications: Materials: Plastic + magnets Length: about 10.50cm/4.13inch magnets diameter 5.0cm/1.97inch Package Includes: 1PC Neodymium magnets note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.