a-316 250 amp electrode holder tweco arcair twe9110-1102 features: -twecotong electrode holders feature reversible top and bottom ''''super-mel'''' insulators. efficient 6-position jaw patterns and fully insulated, protected springs. ball-point cable connection is also featured.. -tweco. -reversible top and bottom ''''super-mel'''' insulators efficient 6-position jaw patterns. fully insulated, protected springs. ball-point cable connection. cable connection supports to minimize cable strand breakage.. -unspc code: 23171500. generic specifications: -a-316 twecotong electrode holder.