You receive 36 threaded magnets with black rubber coating, including threaded magnets with bolts, M6 spring washers, M6 flat washers and M6 nuts The neodymium magnet base is rubber coated to protect the magnet from damage, avoid scratching painted surfaces and restrict the magnet from sliding on slippery surfaces. POWERFUL MAGNET MOUNTING BASE: The rubber-coated round base is 1.69 inches/43mm in diameter and houses 6 neodymium magnets with 22 pounds of vertical magnetic pull against the steel base. Convenient for outdoor use: Our vertical neodymium disk magnets have 3 layers of - coating on the to protect accessories, and the outer rubber coating is also waterproof, so it can be used outdoors for a long time with confidence. Multifunctional use: M6 external thread studs, screw directly into the threaded holes of the fixed body or pass through the holes and tighten with washers to connect any hardware components. for cameras, light bars, display panels, automation equipment, tools and machines. Quantity:36PCS Colour:Black Material:Metal+Rubber Size:Diameter:43mm Package Contents: 36 x threaded magnets with M6 Threaded Magnet with Bolts and Nuts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.