ARC4812-3006 Features: -ARCAIR CARBON ARC ELECTRODES are designed especially for the air carbon-arc metal removal process which melts metal with an electric arc, then blows it away with a jet of ordinary shop compressed air. Arcair electrodes contain a precisely formulated blend of carbon and graphite that produces the most efficient metal removal performance.. -48-123-006. -UNSPC CODE: 23171500. -Miscellaneous Welding Support Equipment Miscellaneous Welding Support Equipment. Generic Dimensions: -0.75" H x 12" W x 6" D. Dimensions: Overall Height - Top to Bottom: -0.75 Inches. Overall Width - Side to Side: -12 Inches. Overall Depth - Front to Back: -6 Inches.