These rare earth magnets combine 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 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 base with 400g load capacity Adjustable angled with included metal plates, enabling creative installations on nonmagnetic surfaces like glass wall or phone case for multiple device compatibility Heavy duty neodymium magnets deliver 20lbs pull force with 1 / 4 " 20 threaded studs, featuring nonslip rubber coating for mounting of cameras, LED lights, and tools on metallic surfaces