The SPIKE can be used to secure our recessed lights into softer surfaces such as dirt, grass, or mulch. This accessory gives you the freedom to be extra creative when installing your in-ground lights. Simply place your 60mm (2 3/8″) fixture into the SPIKE and push it into the ground. This will hold your fixture safely in place. This accessory can be used with all in-lite 60mm (2 3/8″) recessed fixtures, including the PUCK DARK.