TAQTON Neodymium Magnets N52 Ring w/Countersunk Hole, 4 Pack, 34 lbs Holding Force, 1.26&rdquo;D x 0.20&rdquo;H. Super Strong Permanent Rare Earth Magnets. DIY, Kitchen/Garage Tool Organizer Magnets <span class="a-text-bold">Grade: </span>Neodymium N52 (<span class="a-text-bold">Strongest Grade Available</span>)