Insulator:
Brown fiber with small flecks of copper colored metal showing throughout the surface. Insulator groove will hold up to a 1 5/16 inch cable and fits a standard pin.

Clamp:
2 piece identical brass parts on each side, 5/8 inch bolts in top holes, 7/8 Inch In bottom, square shanks, round headed brass bolts and nuts holding the two together. Embossing as shown.

Insulator and clamp for use either inside or outside. Those used outside have large weather cracks after 60 years of use on a D. C. cable line.