Thanks to the SPIKE, the ground light remains securely in place. This accessory also gives you the possibility to be creative when installing your ground lights. You simply place the ground light in the SPIKE and push the ground spike into the desired location in the surface.This accessory can be used with all in-lite ground lights with a diameter of 60 mm. If you have an in-lite ground light with a diameter of 22 mm, you can use the SPIKE 22.