Model No.:protank2 The Kanger Protank 2 is glue-free and fully disassemble-able! The Kanger Protank 2 offers the same great features and performance as the Kanger Clearomizers but with the introduction of a glass tank! The Protank 2 is also 510 threaded and will work on a 510 threaded MOD without the need for an adapter. Updated in Kanger Protank 2: Stronger base Pyrex tank is replaceable Glue Free: All parts are replaceable Can be fitted with 510 Drip tip Features: Replaceable Atomizer Heads (interchangeable with Protank 1 and EVOD) Bottom Coil Pyrex Glass Tank Advertised with a 2.5ml capacity Unlike other Kanger Tanks, the Protank is 510 Threaded and it will work on 510 thread MOD/APV without the need for an adapter Dimensions: 1-15/16"L x 3/4"D (without drip tip) Tips: The metal tube in the center of this Clearomizer leads from the mouthpiece to the battery end. Avoid getting liquid in this tube when filling the Clearomizer. When unfastening the base (atomizer head) to refill the Clearomizer, the seals are temporarily broken and liquid will leak from the mouthpiece or escape into the center tube. Always wrap a cloth or piece of tissue around the mouthpiece when unfastening the base of the Clearomizer. Gurgling noise or leaks: This is a sign that liquid has found its way into the metal tube in the center of the Clearomizer (and usually occurs after a refill). Ridding the center tube of liquid will resolve the issue. To do so without emptying the tank, remove the Clearomizer from the battery, wrap a cloth or tissue around the battery end of the Clearomizer and blow through the mouthpiece. The atomizer head of the Protank can unfasten when unscrewing the tube or base. Always secure the atomizer head before reinstalling the base of the Protank. It is normal to find a small amount of liquid in the battery contact area when removing the Clearomizer or any atomizer. We recommend cleaning the battery before charging it. When possible, keep the tank full and never below 1/3 full of eLiquid ("topped off"). This helps maintain the "vacuum" in the tank and prevent leaks. Atomizer heads have an average lifespan between 10 to 20 days