Vulcan TSC70121 Magnetic Key Holder, PVC, Black, 1-5/8 in W, 3/8 in H, 3 in D (Pack of 16)

You can avoid lockouts by hiding a key(s) for emergencies in this magnetic key holder. Safely hide a key, cash or notes for friends, family, neighbors, and children. The two heavy duty magnets hold on to any steel surface; strong enough to be placed underneath a car and survive rough terrain.