Neodymium Ring Magnet 16 x 12 x 8 mm N35 Diametrically Magnetised
 
An NdFeB (neodymium) ring magnet provides high magnetic attraction for its size and fits readily into various holders and components. Alongside high magnetic attraction, the surface coating helps improve durability. N35 indicates the magnetic grade. NdFeB grades commonly range from N35 to N52. This version radially magnetised: the magnetic field acts radially, with the poles on the inner and outer cylindrical surfaces. This is useful where the field needs to act from the sides.
 
A good choice where stronger holding force and a radial magnetic field are required. (Ø16/Ø12×8 mm) Popular in technical projects involving rotating components, sensors and positioning on shafts where a radial field is needed. Holding force depends strongly on the thickness and condition of the metal surface. It is greater on thick steel and weaker on thin sheet metal.
 
Warning: keep out of reach of children. Swallowing magnets poses a serious risk and requires immediate medical attention. Magnets can snap together suddenly, pinch skin and chip or break on impact. Separate them by sliding them apart. Keep them away from bank cards, sensitive electronics and medical devices such as pacemakers.