Auto Meter 2-1/16 inch (52.4mm) Nitrous Pressure, 0-1600 pounds per square inch, Full Sweep Electric, Cobalt are powered by digital microprocessor-controlled, rugged stepper motor drives and laboratory grade sending units. These Full Sweep Electric Gauges are the BEST gauges available. They combine Extreme Durability and Readability of 270 degree sweep mechanical gauges with the easy installation and safe operation of short sweep electrics. Track tested and race proven, these units use precision senders to keep hazardous fluids out of the driver compartment and perform gauge calibration and sensor diagnostics at power up for extreme accuracy, every time. Most units compatible with Auto Meter Data Logger for the ultimate race info center. Full Sweep, Stepper Motor meter movement. Includes 8 ft. tubing or wiring harness and 1/8 inch NPT Sender.