The OBS Engine II RTA allows you to customize and take your vaping experience to new heights. This highly versatile atomizer can accommodate a wide range of coil builds thanks to its unique construction. Most importantly, this RTA is made with exceptional materials that make it a truly sturdy piece of vaping hardware. Heavy-duty screws keep every component in place so that you'll never have to deal with leaks or connection errors. Unlike many atomizers of its kind, the OBS Engine II RTA boasts a huge capacity. It has four 8mm x 2mm air ports located below the drip tip that can be fully sealed. You'll be able to fill your tank with 5ml of e-liquid for your vaping pleasure. The OBS Engine II RTA is uniquely stylish as well. The 810-resin drip tip features a swirl pattern that's stunning and one-of-a-kind.