It is the latest 510 Clearomizer with 1ml transparent tank made by Kanger ecig company. The clearomizer can produce same good vapor as KR Bottom Coil Clearomizer for eGo . Each one can hold 1ml ejuice and support 300 puffs. No leakage. Easy to refill.The clearomizer have 2 different resistance can work well on most batteries with 510/eGo threading.Brand:KangerUnit:5pc/packShipping weight:60gCapacity:1.0mlSize:Length 62mm /Diameter 12mmThreading:510/eGoResistance:1.8-2.3/2.8-3.2ohmColors:Clear/Black/BluePackage: SimpleHow to refill ejuice?* Please remove the transparent mouthpiece from clearomizer* Please drop ejuice directly along the side.* Please do NOT drop ejuice inside the middle hole, which is vent hole.* Please put the mouthpiece back