Premium QualityNeodymium magnets are the strongest permanent magnets in the world and today the most widely used in all fields. Protective Equipment: The rubber coating has good friction, especially prevents scratches and damage to printing or other sensitive ferrous surfaces Size: D43mm * 6mm (Thickness)Perfect for screwing it into the assembly or passing through a hole and securing it with a nut to fix any hardware assembly Multi-Purpose: Cameras, LED work and signal lights, miniature equipment, control panel, mounting devices Package Included: 4pcs Pot Magnet Mounted on the iron surface of vehicles, doors, metal shelves and kinds of machines with sensitive iron surfaces, the pot magnet can create a permanent or temporary fixing point, avoid a drill hole and damage the painted surface. Specification: 1. Part Name: D43mm Rubber Covered Magnet with M4 Internal Thread Hole 3.Size: D43mm(Diameter)*6mm(Thickness of Magnetic Base) 4. Internal Thread: M4 5. Vertical Pull Force: 9KG Horizontal Pull Force: 2KG based on 10mm steel plate 6. Maximum Working Temperature: 80 degrees Cautions: 1. This magnet is very strong for their size and can pinch your fingers. 2. Keep away from children of all ages. 3. Do not allow magnets to jump together or onto any metal surface. Special care should always be taken when handling.