The Coil Master Matrix 18650 Mech Mod uses 18650 battery with brand new all-black design, it features an awesome brass body with a matte black finish and the nickel plated inner tube wall. This mech features a hybrid 510 connection, copper contacts, nickel plated thread and a magnetic switch keeping voltage drop at an absolute minimum. 6 vent holes add heat dissipation and an extra level of safety. The inspiration of this mod comes from the grating texture found in the grill of modern luxury automobiles. The sleeve is highly crafted by utilizing a unique embossed metal and plating process. The textured surface makes the sleeve feel extremely ergonomic and comfortable in your hand. Each mod is rigorously tested using our quality control process! Satisfaction as always is guaranteed!