These tent stakes are made of 6000 series aluminum, so they are built to last. The UCO StakeLights also have an LED light that marks the perimeter of your tent with light and makes the location of the guy lines clearly visible. The LED is encased in a highly water-resistant TPE housing (IPX 6), and it uses one AAA battery. You can use them in “area mode” (on constantly) to provide 17 lumens of light for up to 10 hours, or you can strobe them for up to 24 hours. The 9″ UCO StakeLight is $5.99 each or $19.99 for a pack of four. Check the Industrial Revolution website to find a retailer near you.