The Sleeve Mod by Limitless Mods Aluminum body is the newest and most revolutionized mod to hit the market. The Sleeve Mod by Limitless Mods is a low cost mechanical mod that allows you to change the look and style of your mod with a limitless number of sleeve options. The Sleeve Mod by Limitless Mods is an all aluminum mod with a direct atty to battery connection on the top 510 with 4 venting holes for heat venting. *Note this is for the Aluminum Limitless Mod body only. Make sure to order the sleeve of your choice to complete your mod.