Check the listing for details. 4" Red Round Screw Mount LED Combination Tail Light w Integrated Backup Light. Condition: New. Listed at 49.46 USD. Universal 4" Red Round Screw Mount LED Combination Tail Light with Integrated Backup Light by Grote®. 1 Piece. 12V DC. As the newest of its kind, the patented design of the Grote 4” Round LED S/T/T with Integrated Backup Lamp integrates the functions of Stop, Tail, Turn and Back-up lights into a single, industry-standard size combination light. These lights by Grote provide brighter illumination, greater performance, and sport a more unique style when compared to stock trailer lights. They feature a tough construction that is less vulnerable to impacts and guarantees reliable and safe use for years to come. So if you want to maximize your safety while driving, while adding a custom touch to your trailer, these tail lights fit the bill.