Set of 30 magnets 1/4" long x 1/4" wide x 1/16" thick (6.4 mm x 6.4 mm x 1.6 mm) Material: Neodymium (NdFeB) Grade: N48 Coating: Nickel Magnetization: Through Thickness Pull Force: 1.7 pounds SKU# M14x14x116BL NEODYMIUM MAGNETS ARE NOT SAFE FOR CHILDREN