Applied Magnets 2" x 2" with 1/4" Hole Grade N45 Neodymium Disc Magnet 1 Neodymium Magnet. Offers much more holding power than any ceramic magnet. Magnet Grade N45, stronger than N42, N40, N38 and N35. Magnetized through the 2" Thickness. Approximate Pull Force: 400 lbs. Durable Nickel-Copper-Nickel 3-layer Coated magnet.