This Lemo RTA tank by Eleaf is rebuildable so will enable you to customise your vaping. It has pyrex glass as well as stainless steel and it can hold 5ml of e-liquid. It has four air holes and these mean that you get a lot of vapour and they are big too, compared with other designs. You can control the airflow using a ring. The e-liquid can be refilled at the base of the tank. This tank has some great features and you get all of the parts that you need such as a mouthpiece, glass tube, atomiser base, cover and tube, coil, silicone cover, absorbent cotton and top cap. There is also a build deck. It has a 510 threaded connection and is easy to refill and take apart. So if you want to have a more customised experience, then this could be the device for you. It offers great value for money and is built to last.