25 100 Strong Countersunk Ring Magnet 1/2"x1/8" Rare Earth Neodymium 1/8" hole

N50 Strong Countersunk Ring Magnets 1/2"x1/8" Hole 1/8" Rare Earth Neodymium. Material: Neodymium Magnet. Super strong Rare-Earth magnets - they are hard to break apart once they get stuck with each other.