"Advantages of kanger mini protank: 1.Changeable coil 2.Changeable Tube 3.Bottom coil design , heating form bottom 4.Huge Vapor,No Burning Smell,No Leakage,No Crack 5.Easy to Clean 6.eGo thread with pyrex 7.Compatiable with eGo,510 Series e-cigarette http://www.waideacig.com/"