Spine Style Hybrid Mechnical Box Mod is constructed from brass inner tube and Delrin body with resin sides. It is a hybrid mod with 510 connection and comes with copper contacts including the battery cap, which has venting holes on it. 

Price: $15.49

Color: Black

Specifications:

Brass (inner tube) + Delrin (body) + Resin (side) construction;
510 threading connection;
Copper connection including battery cap;
Ultem switch with stainless steel accent;
Hybrid connection to decrease voltage drop;
Powered by 1 x 18650 battery (not included);
Hand-screw battery cap with venting holes;
Smart design to fit your hand