The WoToFo SMPL Mod is just about as simple as it sounds! The entire mod consists of two pieces: the body and the switch. The 510 connection has no positive pin, which allows your atomizer's positive connection to contact the battery directly. This eliminates voltage drop, and makes the SMPL one of the hardest-hitting mods around. The single tube allows for 18650 IMR batteries only, yet the fully constructed device is extremely small. When assembled correctly, the switch is recessed, and won't fire under the weight of the mod and atomizer. Simple! The WoToFo SMPL is an expertly-crafted mod that's so simple to use, you'll wonder how nobody thought of it sooner!
*Caution: This device is recommended for advanced users! Because there is no positive pin and the atomizer touches the battery directly, please check that the positive pin on the atomizer protrudes farther than the 510 threading on the atomizer. Failing to do this could cause a short resulting in a damaged battery, mod, or atomizer.*