This sample is an Alnico rectangular block magnet magnet magnetized through the length direction, is a kind of permanent magnet suitable for working in high temperature environment, the highest working temperature up to 500 ℃, the sample length of 22mm, width of 15mm, thickness of 8mm, the surface is not plated, such as you have this kind of magnets to buy demand can contact customer service for you to quote the processing samples.
If you don't know how the length magnetization works, you can see here: Schematic diagram of magnetization direction of magnets
Aluminum-nickel-cobalt technical data;