Magnetic engine and gearbox bungs.
My application was to retro fit strong magnets to brass engine and gearbox drain bungs to capture magnetic particles in vintage car engines and gearboxes. I wanted to adapt the original part, rather than fit a modern plug. AMF provided excellent service, prompt delivery, and very helpful technical advice regarding service temperatures and the right type of magnet to use for my application. A very professional operation. I highly recommend them and will use every time in future.