GlowShift Tinted 7 Color 10,000 RPM Tachometer Gauge - For 1-10 Cylinder Gas Powered Engines - Black Dial - 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 7 Solid Color Settings and Two Color Cycle Modes with Dimmer Function that Allows the Gauge to Dim 30% Installs to any 1-10 Cylinder Gas Powered Engine Mounting Hardware, Installation Instructions, Free Lifetime Technical Support & One Year Limited Warranty 7 Color LED Backlit Tinted Lens Stepper Motor Movement 270 Needle Sweep Polycarbonate Lens Aluminum Trim Ring 2&#039; Power Harness Gauge Visor Mounting Hardware Installation Instructions