Sleek beautifully chromed housing Tach features accurate 0-8000 RPM data every biker needs Mounts easily in multiple locations and positions on handlebar Super-bright illumination for night riding Comes in choice of black or white analog dial face and is available for 1" or 1-1/4" handlebars Compact 2-7/8" D x 3-1/2" L housing Hardware and EZ-follow instructions included Fits H-D or non H-D Big Twins (all years) Includes tach adapter for single fire ignition systems