This is an actual sprinkler system head which has been converted into a key hiding place. This sprinkler key hider blends so well into your yard or garden that no one would ever think that you had a spare key hidden inside. You will never have to worry about being locked out again and only you and your family members will know the secret location where you're hiding keys. The sprinkler head measures 4 inches x 2 inches x 2 inches. The secret compartment measures 3 inches x 1 1/2 inches x 1 1/2 inches. Please note that this item is not a functional sprinkler head. One of the best key hiding places there is.