510 threaded connector;Floating 510 center pin;Brass top cap and bottom cap, stainless steel body;Brass contacts;Bottom fire locking switch (spring-loaded): Simply press the button halfway up and turn the ring clockwise to lock. Unlock the device by turning it the other way;Locking ring material: Stainless steelHouses single battery of 18-series (35mm-71mm);Internal diameter: 18.8mm;Supports button top battery and flat top battery;Maximum supporting battery length: 71mm 3FVape is a professional electronic cigarette retail and wholesale shop. We provide new and cool e-cig products at affordable price. All products will be shipped from China now. If you find a product to be authentic, then it is not a clone. For any question about product title Cronus Style Telescoping E-cigarette Mechanical Mod - Silver, Stainless Steel + Brass, please contact us. We also encourage you to leave review of e-cig products on 3FVape.