There is usually a trade-off between flavor and vapor, but the Thump RDA delivers both rich, intense flavor and superior vapor production. Made in the USA and constructed from 304 stainless steel, the machining is top notch, the threads are butter smooth and the Thump looks stunning on almost anything you attach it to. The Thump features adjustable top airflow with six 2mm air holes, three each on opposite sides of the beveled section of the top cap. This slanted airflow design not only contributes to the Thump's sleek profile but also helps to increase vapor production and prevent e-liquid leaks. The deck features a dual split positive post and negative posts milled into the deck. The large rectangular post holes with beveled edges accommodate a wide array of coil configurations and coil types. With its CNC engraved logo and lightly brushed steel finish, the Thump RDA offers overall top performance, durability and classic good looks in a stealthy RDA. Features and Specifications: Made in the USA 304 Stainless steel 2-Piece Design Dual Adjustable Top Airflow 6 Slanted 2mm Air Holes for Better Flavor and Vapor Production Low Profile, Compact Atomizer 15.5 mm tall Diameter: 22 mm Negative posts milled into the deck Dual Split Positive Post Beveled Rectangular Post Slots Adjustable 510 Connection CNC Engraved Logo No Single Coil Builds Diameter: 22mm Height: 15.5mm Package Contains: One Thump Atty RDA by Thump MFG & Praxis Vapors One Allen Key Two Spare Screws