Designed with glue-free and fully disassemble-able(Glass tank tube is replaceable too), it uses Pyrex glass and hard metals instead of plastic made out of poly-carbonate, the tip is emoveable Hard metal tip. Hard metals instead of plastic made out of poly-carbonate

 The Pyrex glass surrounding provides best safety and healthier environment for e-liquid, best taste. If the mini protank-3 glass tube is broken, you only need to replace new one tube, do not need to throw away the whole eGo mini protank-3 clearomizer set. Or if you just want to change another color, we have seven colors for your choices, you do not need to change the whole eGo mini protank-3 clearomizer set too.