The sample shows a chemical nickel coated NdFeB small cylindrical magnet, supplied by Karachi magnet manufacturer, with magnetic properties N42 grade, required magnet N pole scribe marking, 2mm diameter, 2mm thickness, axial magnetization, from the appearance of the difference with conventional nickel is not obvious, but it is more suitable for use in wet, acidic or alkaline environments.
Electroless Nickel Plated NdFeB Cylindrical Magnet Small
Similar to small cylindrical magnets also with holes;