The KoguoVape Loki is an odd one. The 510 plate is recessed down inside what is essentially a "collar" along the top of the mod which is similar to the recessed 510 based mods that came out from 2016 Elfbar T600 V2 Blue Razz Lemonade Disposable Cigarette Smoking ElfBar 600 Sigarette Elettroniche Usa e Getta Svapo Store Loki Box Mod Koguovape 60W Svapoebasta Yocan Loki Electric Nectar Collector Smoke Glass Vape