... New product 3.5ml vision clearomizer VIVI NOVA with changeable coil head !! Vivi Nova changeable coil ... is the most innovative tank clearomizer made with amazing exchangeable screw-on coil head,which is easily removed ... :1.8ohms,2.4ohms,2.8ohms4. 510 Screw thread, compatible with 510, eGo, eGo-T, eGo-W, ... 8/2.4/2.8ohmsouter diameter :19mmWeight:16g Screw thread:510/eGo threadMatch model:510, eGO, eGO ...