EGO-T Type-A Atomizer for use with 510 threaded devices. These are standard resistance rated @ 2.8 Ohm. They are designed to be used with tank cartridges which directly drip e-liquid into them.Type A cartridges are capable of holding 1.2ml of liquid. These are great for mess free convenient vaping. For use with Type-A EGO-T cartridges only.