Prima PEH 30 - 600 Amp Electrode Holder - It is also called as a stinger, a clamping device for holding the electrode securely in any position. The welding cable attaches to the holder through the hollow insulated handle. The electrode holder design is made such a way that it allows the quick and easy electrode exchange. They come in 2 general types - insulated and non-insulated. Mostly the insulated stingers are proven to be a safer device on the job site.