KT 4 LED 6" Amber Rectangular CLEARANCE Side Marker Truck Trailer Light KL15113A Functions as clearance or side marker light. Polycarbonate lens is sonic welded to the housing. 5-diode square LED light. Operates from 9~16 volts. SAE Approved. This light model complies with the DOT requirements. This is 6" a rather big one not the small 2" side marker, it is going to fit perfectly on your truck!