Rectangular, one-bulb clearance or side marker lights w/built-in reflector optics eliminates the need for separate reflectors. Surface mounts on 3-3/8″ centers with mounting gasket included. Twist-in socket assembly contains lead wire and ground wire for mounting on all surfaces. 3-7/8″W x 1-13/16″H. Replaces Bargman 68 Series. Priced each.