The NEW Kanger Mini Unitank. The biggest improvement over the Protank 2 or Protank 3 is that you have a bottom coil unit but fill with E liquid from the top. For vapors that love the Kanger Protank design but don't need a glass tank because of deteriorating ejuices or the inconvenience for filling from the bottom of the clearomizer. Mini Unitank clearomizer work well with most Mods and eGo, eGo T, eGo C, eGo-K, eGo-Q and most ego style batteries. Colors Available: Clear/Red/Blue/Purple/Grey The Kanger Mini Unitank uses the same bottom coil heating system as Protank-2 Glass BCC clearomizer. The Kanger Mini Unitank uses Kanger Universal bottom coils replacements coils. Mini Unitank also has a removable 510 metal drip tip. The drip tip can be replace it with various drip tip for 510/901. Brand: Kanger Unit: 1 pack Tank Material: Plastic Metal Material: copper material with chromium electroplating Size: Length 2.95" .55" Diameter Capacity: 1.3ml Threading:eGo Package:Mini Paper Box Each Kanger Mini Unitank contains: 1pc PC Tank Tube 1pc Bottom base 3pc Replacement coil unit ( 1pc 1.8ohm coil, 1pc 2.2ohm coil, 1pc 2.5ohm coil) 1pc 510 Metal Drip Tip Warrantynly accept DOA. Please refer to Warranty Policy for details. Your satisfaction is Ecig Best Save's top priority. If for any reason you are in need of help or support, please click Help or live chat tab at the left of our home page. We will reply to you asap.