Tank Includes: 1x Valyrian atomizer 1x Extra Pyrex glass 1x 0.15 ohm coil installed 1x 0.15 ohm coil 1x Extra rubber O-rings 1x Extra drip tip 2x Extra pins 1x User manual 1x Drip tip cover Specifications: Size: diameter 25mm x height 62.3mm Tank capacity: 5ml optional 8ml glass Net weight: 62.6 g Material: stainless steel/copper and pyrex glass Pros: There is nice 5ml tank capacity with an optional 8m capacity with a separately sold glass. Coil life on this tank is outstanding! I'm currently at 1000 puffs and I keep waiting for the coil to taste bad! I'm very picky when it comes to flavor, and I usually change coils at around 600-700 puffs but this coil has really surprised me. Color choices! There are so many colors to choose from! A tank to match any mod you want to pair it with I have noticed no spit back or dry hits, even at 1000 puffs The tank comes with three changeable pins. Unrestrictled flat pin, spiral type pin, and wave type pin. There is only one type of coil for this tank, running at 0.15 ohms. To me, this is extremely convenient. No more trying to remember which type of coil to get at your local vape shop. Just the uwell valyrian coil. With three different pins to choose from, you can change the way it vapes. Very convenient fill. Under the drip tip is a spring loaded button. Once pressed, it lifts open with two easy holes for filling juice. The 0.15 ohm coil is rated for 95w-120w and the pins change the watt range and the flavor/feel of the juice and the airflow at different watt range. The unrestricted pin is for 100w-120w The spiral pin is for 95w-105w The wave pin is for 100w-120w To change the pin, simply unscrew the bottom of the tank, unscrew the coil, and replace the pin. Cons: It was hard for me to find any cons. But here is a small list. To some people, only one type of coil may be a downfall. It is a bit of a larger tank at 62.3mm A bit pricey, but worth it! Around $50 at my local shop. All in all this is a fantastic tank. I got it to do a review, but now it is definitely my daily tank!! Let me know if you have any questions, and I will answer them to the best of my knowledge. Happy vaping!