Seven Sins Choppers Vintage Microphone Taillight TM for custom builds. The inside is cast in a solid red resin (hand-sanded smooth) and has several sealed LED lights for illumination. This is a dual circuit light (one circuit for the running light and another circuit for the super bright brake light). This pure vintage-class taillight comes with a 2.5" x 7/8" (1/4" thick) stamped stainless steel mounting bracket, a stainless steel button-head cap screw with a stainless locking nut and a special locking screw/nut which attaches the microphone to the bracket.