Magnet specifications provide the detailed set of requirements that define a magnet's physical and magnetic characteristics for a specific application. These include critical geometric dimensions such as diameter, thickness, and length, which must be precisely defined . For assemblies, specifications expand to include the effective length, gap or bore diameter, and the good field region—the volume where the magnetic field meets the required uniformity and strength . Performance under specific conditions is also a key part of the specification. This includes the maximum field/gradient the magnet can produce and its operating temperature range . For example, a standard magnet holder may have a maximum operating temperature of 80°C, while a version with special treatment can withstand 200°C . Additionally, specifications often include mechanical and safety parameters like adsorption force (holding power) to ensure the magnet functions correctly within a larger system .