Sunpro CP7983 Mechanical Oil/Water Temperature Gauge - Black Dial Blue-line styling with black 2-in face and white digits Includes 72-in capillary tubing with 5/8-in national pipe thread and 1/4-in, 3/8-in, and 1/2-in adaptors Designed for negative ground systems Provided with a black 2-in dial face Includes 72 capillary tubing with 5/8 NPT thread and 1/4", 3/8 and 1/2" adapters