Includes pilot light fixture with chrome finished plastic collar, red pilot light jewel, #47 6.3V bulb. Fits through a .620" hole in the chassis. Mounting hardware is included. Light duty mostly plastic construction OK for light duty stationary equipment but not recommended for heavy duty road use/rough handling nor for old vintage electronics. Please note that we offer a couple of other more expensive pilot light assemblies of mostly metal construction if your project requires that level of quality.