Neodymium Disc Magnet - 200mm x 20mm ID_4mm smooth expression of force is

smooth expression of force is used to transfer or regulate mechanical power

Failing that

This magnetic sheeting has a red glossy PVC coating

these fail safe devices

Magnetic engagement inflicts no material penalty to surfaces subject to magnetic bond

Neodymium Disc Magnet - 200mm x 20mm ID_4mm smooth expression of force isMagnetic Product Description: This strong rare earth disc has a diameter of 200mm and a height of 20mm. It is identified by the AMF Magnets part number 19990. Uses for our strong rare earth disc magnets: Our Neodymium magnets are commonly used for metal separation, picking up nails & screws, water conditioning, building generators, magnetic stirrers, metal detectors, tool knife holders, holding and magnetic studfinders.