The Timesvape Keen Mechanical Mod is a collaboration between Timesvape and TenaciousTXVapes. It is a single tube mech that runs on either a 18650, 20700 or 21700 cell (all sold separately).  The Timesvape Keen Mechanical Mod constructed in stainless steel, brass/copper and aluminum, with a certain hardness and toughness, it stands the wear and impact in daily use. The Keen mod is 30mm diameter at its widest point, tapering to 25mm or 27mm at the top. In addition, the Keen Mod has an innovative floating contact pin with a ball head for hard fitting and adopts a gold plated contact pin with a flat smooth button spring for the perfect connection. Built-in Delrin tube effective to protect the warping from wearing. Also, it does have a hybrid 510, so atomizers with a protruding 510 pin can only be used with it. Moreover, Timesvape Keen Mechanical Mod also includes two different diameter adapter covers, so you will be able to use most of the atomizers on the market today.