Neodymium Block Magnet 15 x 10 x 10 mm N52
 
An NdFeB (neodymium) magnet provides high magnetic attraction for its size, making it useful for technical projects, DIY and industrial applications. It is much stronger than conventional ferrite magnets and generally has a protective coating because the material can corrode over time. N52 indicates the magnetic grade. The usual range is N35 to N52, with higher numbers generally indicating greater magnetic attraction. The block shape is easy to position, provides a large contact area on flat surfaces and fits readily into a variety of holders.
 
At 15×10×10 mm, this magnet provides strong, stable attachments for jigs, tools, removable assemblies and workshop organisation. Even a small gap caused by paint, tape or clearance noticeably reduces magnetic attraction. It performs best on solid steel.
 
Warning: not suitable for children. Two magnets can snap together quickly, pinch fingers and crack or chip. Separate them carefully and avoid impacts. Keep them away from bank cards, sensitive electronics and medical devices.