Home Store About Dolphin Gauge Sets   AVAILABLE IN MANY COLORS - 5 OR 6 GAUGE MECHANICAL OR ELECTRONIC       5 Gauge Mechanical   6 Gauge Mechanical           5 Gauge Electronic   6 Gauge Electronic     Quad - Speedo's - Tachs QUAD & SPEEDO ARE AVAILABLE IN WHITE, TAN, BLACK AND GOLD QUADS ARE AVAILABLE IN 5” & 3 3/8”, MECHANICAL & ELECTRONIC WE ALSO CARRY A 2 1/16” ELECTRONIC TACHOMETER.   5 Inch Quad With Mechanical Speedo   3-3/8 Inch Quad With Mechanical Speedo   Tachometers   5 Inch Quad With Electronic Speedo   3-3/8 Inch Quad With Electronic Speedo