Sierra 69721P Amega Series OB Twin Engine Gauge KitFeatures: Gauge Description: Twin Engine Add On OB Gauge Kit; Gauges: 2; Black dial, red graduations, white numerals, vivid white pointer staff; Scratch resistant curved glass lenses, with black, near-flush bezels; U.S. and metric scales, with ISO symbols, where appropriate; Perimeter and thru-dial lighting; Optional add-on eyebrow or square bezels available (see Gauge Accessories for details; Contains: 57901P Voltmeter; 58255 7K Tachometer;