... ,tile size:accord to your need Strong Neodymium Magnets mainly comprised of neodymium ,iron and boron,is the third generation ... ,It has excellent properties of high remanence,coercivity,and Max.energy product. Strong Neodymium Magnets grade:N35,N38,N40,N42, ... low weight loss less than 2 mg/cm2 Strong Neodymium Magnets applications:loudspeakers,motor assemblies,windmill,Home appliance,acousics, ...