This half-sweep 3-3/8" 8000 rpm Tachometer features a dual layer design, color changing rocket booster, a red pointer, a rich black face with bright white numerals and indicators and LED lighting. Finished with a Sainless Low Step Bezel and Flat Glass Lens. The Rocket Tach comes installed in a chrome cup that allows for a variety of mounting positions. It is easily calibrated with pushbutton control for either 4, 6 or 8 cylinder engines and includes a single snap-in wiring harness for ease of installation. Great for completing that retro look with the latest electronic technology, the Classic Instruments Rocket Tach is truly a blast from the past.