Detailed Product Description Diameter (for submerged arc welding): 2.0, 2.5, 3.0, 3.2, 4.0, 5.0mmwelding wirePacking:25kg/disk50kg/bundle250kg/palletOur ceramic arresters and semiconductors are mainly used for over-voltage protection of communication systems, power supplies, cable television, computers, modems and other electronics equipment, and switching spark gaps for ignition purposes. ...