These are single side (passenger) units of the very popular Inner Edge visor light from Whelen. 
Model #IZ06UF5P. Excellent budget visor lights for security, towing, roadside services, and more!
 
Measure carefully to see if these will fit your vehicle! These visors are for 2006 Chevrolet Impalas, but they will also fit other vehicles as long as the dimensions allow. Bracket modification/separate purchase may be required depending on your needs. 
 
Wiring: 12V DC power/ground/pattern change/etc.
Mounting: Includes Impala visor bracket; may fit other vehicles but cannot guarantee; custom/specific brackets or modification may be required
Dimensions: (Curved lengthwise for windshield): 17.5" L x 6.5" D x 3" H (excluding bracket)