For use with mechanical pressure gauges up to 200 PSI. Includes 12ft. of 1/8″ Nylon Tubing, 1/8″ NPT Male to 1/8″ compression fitting, 1/8″ NPT Female to 1/8″ compression fitting, and 1/8″ NPT to 1/4″ NPT bushing. DO NOT USE with Fuel Pressure, Brake Pressure, or Nitrous Pressure gauges.