Electrode Holder, 250 A to 300 A, 2 0 Cable, 3 16 in Electrode Cap, 9 3 4 in L, HT 25 ORS NASCO Scal Arbor Thread TPI Scal Arbor Thread TPI or Pitch 5 8 in to 11 Big Catalog YES Brand PFERD Catalog MPI Catalog Color Steel Gray Construction Catalog NO Country of Origin US Dia the three smaller models will fit conveniently into a shirt pocket All have sturdy friction joints to maintain rigidity and accuracy Upper and lower tongs are made from a high copper alloy for maximum conductivity and strength Top and bottom tip insulators are a molded fiberglass compound and will withstand intensive heat impact Handles are molded from a durable glass filled nylon material with a good heat and impact resistance Oval point screw cable connection is standard on all models