N52 100X50X5 ，100x50x20 ，100x50x10 Standard Neodymium Block Strong Magnets for Customized Generation of Magnetic Motor Generat

N52 100X50X5 ，100x50x20 ，100x50x10 Standard Neodymium Block Strong Magnets for Customized Generation of Magnetic Motor Generat

Aliexpress UK