Neodymium Ring Magnet – 20mm (OD) x 12mm (ID) x 5mm (H) | N38 H_18mm It has a magnetic flux

It has a magnetic flux reading of 5781 Gauss and a pull force of 22

Some of these maintenance locomotives house powerful ferrite block magnets like these 150mm long

This rectangular block magnet measures 40mm in length

25mm (ID) x 3mm | N45

depending on which test is being done

Neodymium Ring Magnet – 20mm (OD) x 12mm (ID) x 5mm (H) | N38 H_18mm It has a magnetic fluxThis Neodymium Ring Magnet (20mm outer diameter x 12mm inner diameter x 5mm thick) is manufactured from high performance Grade N38 rare earth material, delivering exceptional magnetic strength in a compact form. Its ring design makes it ideal for applications requiring secure fastening, alignment, or rotational movement around a shaft or bolt. This magnet is identified by product code R OD20H5ID12 N38. Engineers, manufacturers, and hobbyists value