MADCATZ 3/4 Inch Round Clear Lens Amber light 3 LED 12V Side Marker Lights T-Tap Wire Connector 18-22 AWG Include Hole Saw Set 19mm Kit for Trailer Truck.
Amazon.com: MADCATZ [Pack of 200 3/4 Inch Mini Round 100 Amber 100 Red 3 LED Side Marker Indicator Lights Signal with Hole Saw Steel 19mm Trailer Truck 12V DC : Everything Else
SPARKWHIZ Recessed D-Ring Tie Down Anchor Kit, 4 Pack Trailer D Ring Tie Down Anchor Heavy Duty with Hole Saw Drill for Trailer Cargo Truck Flatbed Pickup (6,000 lb. Capacity)