The Raven Tank is a "BEAST" among boys. * 510 connection * Easy to fill and clean * Unique atomizer/clearomizer desisgn * Durable plastic tank * Chrome body * No burning or leaking * Low resistance or standard resistance BEASTLY BECAUSE: Enjoy this medieval warrior! The appearance of this RAVEN is unlike anything on the market. In addition, the atty/carto is a hybrid of sorts. It feeds like a traditional carto tank (slot on the side) but the inside reveals a "wick" type system similar to a clearomizer. You can also use F-16 or SMOK pre-punched cartos...so it's a very versatile tank.