30PCS 1/4inch Rubber Coated Magnets 30LBS Mounting Magnet Anti-Scratch Mounting Magnet Magnetic Non-Slip Strong Magnet for Lighting Bar, Additional Mirrors and Camera

ALL-IN-ONE MOUNTING KIT: You receive 30 sets, each set includes 1 black rubber-coated magnet with an integrated bolt, plus 1/4 inch spring washer, 1/4 inch flat washer, and 1/4 inch nut. Plenty to cover multiple mounting points.
STRONG MAGNETIC FORCE: Each 1.69" round base houses 6 neodymium magnet cores, delivering up to 30 lbs of vertical pull on a steel plate.
Storage Tip: Please avoid storing the products back-to-back (pole-to-pole), as this creates a strong magnetic bond that is very hard to break and could scratch the surface. If they do become stuck together, never pull them apart with your hands instead, gently slide them apart using a thin tool (e. g., a plastic card) or place them on a table edge to separate with ease.
RUBBER COATING PROTECTS SURFACES: The neodymium base is fully encased in durable black rubber, preventing scratches on painted or delicate surfaces, reducing slip on smooth materials, and absorbing impact.
WEATHER-RESISTANT DESIGN: Triple-layer anti-corrosion treatment plus a waterproof rubber outer layer effectively blocks moisture and rust, making these magnets reliable for long-term outdoor use.
MULTI-PURPOSE USE: The 1/4 inch male threaded stud is strong and break-resistant, ideal for securing objects with holes of various thicknesses using the included washers for easy fastening and removal. Ideal for mounting cameras, brackets, light bars, panels, automation equipment, and more