GlowShift 10,000 RPM Tachometer Gauge - For 1-10 Cylinder Gas Powered Engines - White LED Backlit - Smoked Lens - 2-1/16" 52mm 2 1/16 Inch (52mm) Black Face Gauge with a Magnified Tinted Lens Reads from 0 to 10,000 RPM & Installs to any 1-10 Cylinder Gas Powered Engine Red Illuminated Needle with White LED Backlighting & Stepper Motor Technology Mounting Hardware & Installation Instructions Free Lifetime Technical Support & One Year Limited Warranty