Twecotong 300 a electrode holder designed for 2/0 cable size accommodates electrode thru 7/32" and is made of copper alloy. 10" long holder with ballpoint cable connection is completely Insulated and has reversible top, bottom Insulators. It holds the welding electrode in place with 6-position jaw patterns and is ideal for metal fabrication. Holder featuring protected Springs has cable connection supports that reduce cable strand breakage.