This mod is absolutely stunning! It's very well built. Very sturdy. I love that the batteries are inside the the mod with a door with a seal protecting them. The screen is beautiful and easy to read. Even the 510 pin is very well built. I don't really use tanks so my husband took the tank to this kit but we both have the TFV8 so he was very excited to get the new TFV9. The tank is very well built as well. I love that the top of pulls to open and then slides to allow for refilling and the airflow adjuster is very smooth and easy to adjust. The entire kit all together is very well worth the money. I've paid this same price for much much worst mods, not even kits, just mods alone that were built worst off than this entire kit together. If you're thinking about buying it, just do it. You won't be disappointed. Oh also the fact that it's waterproof, shockproof, and dustproof means it's going to last no matter how rough you are on mods. If you aren't on the gentler side with mods, this mod is perfect for you!