For use with mechanical pressure gauges up to 200 PSI. Includes 10ft. of 1/8 in. Nylon Tubing, 1/8 in. NPT Male to 1/8 in. compression fitting, 1/8 in. NPT Female to 1/8 in. compression fitting, and 1/8 in. NPT to 1/4 in. NPT bushing. DO NOT USE with Fuel Pressure, Brake Pressure, or Nitrous Pressure gauges.