Neodymium Pot Magnet Ø16×4.5x3.5mm Countersunk Hole Pull Force 6.9kg

Pot magnets are Neodymium magnets inside a housing. They develop their maximum force when in full contact with the metal surface.
WARNING! Keep strong Neodymium magnets away from credit cards, ATM cards, phone cards, hard drives, pacemakers, electronic devices, and children! Especially larger magnets have incredible strength and can cause damage or injury. Wear protective work gloves!