This tiny little stainless steel push button switch comes with a special radius shaped spacer to allow mounting in handlebars. Switch works for turn signal. Starter, horn, kill or hi-low, must be used with a switch relay. Requires a 9/32" hole and 5/16" UNF nut. Switch is less than 1/2" in diameter and sticks only 1/4" above the handlebar surface. Of course you can also install this switch on flat surfaces when you do not use the radius shaped spacer. Installation requires a 9/32" drill and a 5/16-24 UNF tap. Switch comes with two 20" wires installed.