Set of 4 magnets 3/4" long x 1/2" wide x 1/4" thick (19.1 mm x 12.7 mm x 6.4 mm) Material: Neodymium (NdFeB) Grade: N48 Coating: Nickel (Ni) Magnetization: Through Thickness Pull Force: 16.9 pounds SKU# M34x12BL