Rugged black plastic case holds two large keys. Will not rust. Two heavy-duty, superior magnets hold to any steel surface. Ideal for use on all vehicles, or any magnetic surface where you want to hide a key for emergencies. Supplied in black with silver imprint. Available in 2 sizes 3" x 1-7/8" x 5/8"(small) and 4" x 1-7/8" x 5/8"(large)