Inductive Signal Clamp, Application A Traceable Signal to Conductive Buried Utilities Such as Cables or Pipes, Cable Length Not Applicable, Color Black, Features 5 in Clamp Used in Conjunction with Ultra Signal Transmitter to Apply a Traceable Signal to Conductive Buried Utilities Such as Cables or Pipes, For Use With Signal Transmitters, Operating Frequency 5 kHz, Outside Diameter 4 in, Product Type Ultra Signal Clamp, Compatible with Manufacturer Model Number 795946