Billet aluminum housing with two pre-wired stainless momentary push button switches curved to follow handlebar contours when installed. Can be used as horn starter or turn signal switch. Mounts directly to the handlebar. Offers a perfect seamless fit on 1" diameter bars and will show a little air gap on the smaller 7/8" (22mm) bars an aesthetics issue if anything. Approx. dimensions: Body 21.2mm high x 51mm wide. Switch head without bezel O 11.9mm switch head with bezel approx. O 17.5mm switch knob housing O 7.9mm with 5/16"-24 threads. Universal