9" overall. Aluminum construction. Adds a light function versus to an ordinary tent stake, making it easy to find or set-up your tent in the dark. Activated by a switch and powered by one AAA battery inserted into the hollow tube of the stake, the StakeLight creates a perimeter of light around your tent. Provides either continuous light or set it to strobe mode to mark your tent's location. Up to 17 lumen output. Burntime per battery - 10 hours on continuous mode or 24 hours on strobe. Four pack. Hang packaged.