This kit includes everything you need to transform your Stubby RDTA into the perfect device for mouth-to-lung vaping. The condensed chamber improves flavor and is optimized for small coils, while the tighter airflow pins allow you to adjust the amount of air flowing under the coil. The wick control plugs let you customize the flow of juice when using different wattages, giving you complete control over your vaping experience. With the Stubby MTL Kit, you can enjoy a truly authentic mouth-to-lung vaping experience.