Esab Dual Shield 111-RB description: Dual Shield 111-RB is a low slag, high deposition flux cored electrode designed for joining structural components made of low carbon steel. The electrode is designed to be used with 100% CO2 gas shielding. Dual Shield 111-RB can achieve deposition efficiency above 88%. This increases the amount of deposit achieved over a given period of time, as compared to a standard Dual Shield E70T-1 electrode.