The DIAMOND “E” Span Clamp is recognized in the telephone industry for its quality and dependability. The clamping plates are made of 1/4" thick, high tensile strength steel. The 3/8" pigtail hook is shaped for absolute retention of the wire loop of the drop wire clamp. This feature eliminates the problem of an attached wire being loosened by wind whip. All parts are corrosion resistant due to DIAMOND’s quality galvanizing process.