Very nice mod. I like the size and 21700 battery capacity the best. Quality is great for price point, I ordered a second. The side fore bar may be a little tight for some people but I think it's just fine. Im running a 28mm nightmare rda on to in ultum and it looks and fits great. Over all I'm very happy. The shipping from the store was fast and super smooth. I could only find this mod at the time in the UK and they took good care of me.