These are genuine Joyetech 510 High Resistance Atomizers. 

Price is for one atomizer

High resistance atomizers burn cooler than standard atomizers when used at the same voltage and therefore require a high voltage or variable voltage device to reach their maximum performance capabilities.  The use of this atomizer on a standard (non-variable voltage) battery will result in little to no vapor production.

Useful Tip:

E-Liquid can be dripped directly onto an atomizer. A drop or two will produce a more intense flavor and lots of vapor. However, we do not recommend directly dripping on the atomizer because it can degrade atomizer performance and shorten its life dramatically.

It is always a good idea to have a spare atomizer!

Remeber DO NOT OVERDRIP!