Oerlikon Overcord R 12 description: OVERCORD R 12 is a rutile-cellulosic coated MMA electrode for all positions welding. Easy to use and tolerant of dirty or poorly prepared base plates. A general purpose electrodes suitable for industry and metalworking trade. Working on poorly prepared pieces, pipes, tubes, etc. Metal joinery, light to medium weight framework, sheet metalwork, maintenance, etc. Easy to use eaven for fillet weld in vertical down position. Flat or slightly convex beads and easy slag removal.