For advanced vapers ONLY with a thorough knowledge of Ohm's Law and safe coil building

Features: 

- 21700 and 20700 compatible

- 25mm Hybrid 510

- Ergonomic Body Design

- Full Naval Brass and White Brass

- Silver Plated Copper Contacts Throughout

- Adjustable Positive Pin for Battery Length

- Side Firing Button

- Revolutionary Firing Mechanism

- No Spring, No Magnet

- Constant Contact

- Delrin Insert for Heat Dissipation (No hot button)

WARNING: This is a direct contact mechanical device is solely for  advanced users only! This device should not be used by anyone without adequate knowledge on safe battery limitations. To prevent venting ensure your batteries are facing correctly and never discharge completely.

Warnings: 
-Do not overdischarge/overcharge 
-Recharge drained batteries ASAP 
-Do not short circuit
-Please be familiar with handling lithium-ion batteries before purchase.