SMA Reverse Polarity Female Bulkhead on RG142 to TNC Female Bulkhead Coaxial Cable Assembly This Coax Cable is made from highest quality materials. This is a custom assembly. The price shown is a base price for terminating the connectors to the cable. Enter your required cable length in the box. Any Additional cable length must be entered in Feet. Any additional footage will be added to the base price at $2.35 per foot. Cable is 100% inspected before shipping.