Compact design and high performance - Neodymium magnets represent the most modern family of permanent magnets and are made of a Neodymium Iron Boron (NdFeB) alloy.
Ring Magnet Neodymium with Screw Hole D30 x d10,5/4,3 x 5 / N42 - NdFeB Holding Force Max. = Kg. Coating Nickel (Ni+Cu+Ni) Axial Magnetization [Along Height]