Lincoln Electric Electrodes. Part # ED030893 Diameter: 1/8 inch. 3.2 MM. Excalibur 8018-C3 MR. 50 pound Easy Open, AWS E8018-C3 H4R. Top Features: Designed to produce a 1% nickel deposit. Premium arc performance. Square coating burn-off. Easy strike and re-strike. Effortless slag removal. Typical Applications: Shipbuilding. Piping and gas storage tanks. Weathering steels. Cross country pipe repair. Welding Positions: All, except vertical down.