Sprinkler Key Hider - Looks like a regular sprinkler head. Perfect for the front or back yard. Hides multiple spare keys.Hide your spare keys in the last place anyone would think to look - a sprinkler! The Lucky Line key hider looks just like a regular pop-up sprinkler head and is made of tough ABS plastic. Simply push it into the dirt around shrubs or walkways. Large watertight cavity holds multiple keys or other objects.This would make a clever tiny geocache or a place to stash a small survival kit.I sell a lot of keys and this will fit even the largest I sell, like Porsche 928, Land Rover, or Jeep "Rock" keys.The compartment is about 1 3/8" diameter and 2 7/8" long. The center is a little longer than the rest, so an object up to about 5/8" diameter can be up to 3 1/2" long.