West Arc Consumables. Made from Resistance Welder Manufacturers Association (RWMA) Class 2 Alloy (Chromium-Copper) and are suited to welding cold- and hot-rolled steels, stainless steel and low-conductivity brasses and bronzes. Class 2 Alloys are recommended for high-production operations. Used for welding electrodes, projection welding dies, seam welding shafts and bearings, flash and butt welding dies and current-carrying structural components. Heat treatable. 5 RW (#2 Morse Taper) pointed nose spot welder electrode tips have a 0.75" (19.1mm) taper engagement length, 0.613" (15.6mm) gauging diameter, and a 0.375" (9.52mm) water hole diameter. Overall Length: 1.25" RW (Morse Taper): 5 (#2) Diameter: .625" Welding Face Diameter: .25" Nose Length: .5" Water Hole Depth: .75"