Set of 5 Cab Marker Lights Chrome with 31 Ultra Bright LED Lamps Compatible with Peterbilt Kenworth Freightliner Mack Roof Clearance Amber DOT Compliant 5 heavy duty chrome cab marker lights (each with mounting hardware and closed cell foam rubber base gasket) Approximately 11.25" long, 4.25" wide, 3" tall; Center-to-center spacing approximately 9-1/8"; 12 Volt; 2 wire leads; Ultra Bright 11-1/4" Chrome Cab Marker Light Set Each unit has an impressive 31 LEDs for a blazingly bright quad-directional shine; Tested for brightness and vibration and wet conditions; Weather resistant (encapsulated electronics protected from corrosion and weather); Designed for large heavy duty trucks such as Freightliner, International, Kenworth, Mack, Peterbilt and others (but this light can also be mounted to trailers, trucks, vans, busses, boats, etc.); Applications include roof cab marker, clearance light and running light Heavy duty amber polycarbonate lens, chrome plated automotive grade high-impact ABS housing