Set of 6 magnets 1/2" wide base x 3/8" wide top x 1.25 long x 3/16" thick (31.75 mm x( 12.7 mm - 9.5 mm) x 4.8 mm) Material: Neodymium (NdFeB) Grade: N48 Coating: Gold (Au) Magnetization: Through Thickness SKU# MAuBR The Gold coating is on top of a tough Nickel coating creating alustrous, corrosion resistant finish. But, remember, ALL neodymium magnets are brittle and will break, crack or chip if not used with care. Also, the gold coating is extremely thin and will rub off after repeated handling.