LavaFire extension mod with high quality mechanical parts and CNC machined. 510 threading. Durable and safety design. Housing various batteries including 18650,18350,16340, etc.
Below is the list of battery cups and batteries, also different voltages to work with different resistance atomizerShort cup: 16350/16340 3.7 V regular or low resistance atomizer
Short cup + Extend cup: 18650 3.7 V regular or low resistance atomizer
Short cup + Extend cup: 18340*2pc 6 V High resistance atomizer