This small porcelain insulator is 2 inches high and 1 3/8 inches in diameter. On one side is marked "PAT.APP" and on the other is "PRIME." The bail handle is attached with a metal pin that goes through a small hole in the insulator. The insulator is attached to the mounting bracket by a small machine bolt and square nut. The mounting bracket is 3/4" wide flat iron, twisted as shown in the photos. Overall length is 10 3/4 inches from square end to to the pointed end. Any information about this item, how it was used, where it was used, patent info, manufacturer, etc would be appreciated. [id=389472530]