Chrome plated housing with a tag light window. Tail light uses a standard 1157 style incandescent light bulb for 12 Volt Systems. Taillight includes approximately 8” feet of lead wire. Dimensions: 2" Tall x 4-1/4" Wide x 2" Thick The flat back surface makes for easy mounting on many custom builds. Drilled and tapped for use with 5/16-18 mounting bolts on 2" centers