The Evod 2.6 ohm bottom feed coil clearomizer tank system is leak free and very durable. This Evod tank clearomizer is a Ego threaded tank and not a 510 threaded Tank. This evod tank system holds 1.5 ml of your favorite E-juice. This tank seems to give a better throat hit and is a upgrade to the CE4 Clearomizers. It has a replaceable coil for your convenience. You can change the replaceable coil with different ohm resistance for your preference and different flavor juices. Hometownvapor only carries the best quality clearomizers and atomizers at a price you cant beat.