Welding Stud Electrode; Item Stud Electrode; Type 75 Percent Tungsten, 25 Percent Copper; Size 1 Inch Diameter (Weld Face); Used On Item Welding; Applicable Standard ASTM 702 C1D; Face Refactory Material RWMA Class 11 to 10W; Base RWMA Material Type RWMA Class 2 - C18200; Bushing Inner Diameter 0.256 Inch; Bushing Depth 2 Inch; Screw Thread Size 1/4 Inch; Refactory Material Thickness 0.250 Inch; Overall Length 3 Inch; Filler Material 75 Percent Tungsten, 25 Percent Copper