MDM Coaxial: The MDM Metal Shell Connectors have been tooled in several coaxial layouts and offer the versatility of combining coaxial and signal lines in the same connector. Standard coax is RG178 white. MDM Power: The same insulator that is used with coaxial contacts is available with power contacts. This offers the versatility of combining power and signal lines in the same connector. MDM Coaxial/Power Power and coaxial contacts can be interchanged as desired.