MINI Generation 1 R50 R52 R53 Magnetic Rotatable Phone Holder With New Improved Magnets! 1x Magnetic Phone Holder (NEW IMPROVED MAGNET). Neodymium magnets are used for the magnetic section of the holder these are commonly known as 'rare earth' magnets which are high-performance permanent magnets constructed from an alloy of neodymium, iron and boron.
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