528 Customs company started when they wanted a tank that could perform like a dripper. At the time there wasn't such a tank on the market. They started modifying kayfun's to get better performance. At the same time, local shops and fellow vapers wanted to purchase them for their use. They decided to start producing and selling these modified tanks to customers throughout the world. As they kept hand modifying and producing these tanks they found ways to make each version better then the last.The demand was so high that they decided to create our own tank based off of our ideas and vision to push the limits to the next level. And above all else, to give Their customers the best possible Rebuildable Tank Atomizer . And the Monster V2 was born. They look forward to keep innovating and bringing you better products in the future.