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.